diff --git a/packages/VendorLocker/NodeVendorLocker/ClassMethodParamVendorLockResolver.php b/packages/VendorLocker/NodeVendorLocker/ClassMethodParamVendorLockResolver.php
index 063901657d6..88174862ece 100644
--- a/packages/VendorLocker/NodeVendorLocker/ClassMethodParamVendorLockResolver.php
+++ b/packages/VendorLocker/NodeVendorLocker/ClassMethodParamVendorLockResolver.php
@@ -21,6 +21,25 @@ public function __construct(
     ) {
     }
 
+    /**
+     * Includes non-vendor classes
+     */
+    public function isSoftLocked(ClassMethod $classMethod): bool
+    {
+        if ($this->isVendorLocked($classMethod)) {
+            return true;
+        }
+
+        $classReflection = $this->resolveClassReflection($classMethod);
+        if (! $classReflection instanceof ClassReflection) {
+            return false;
+        }
+
+        /** @var string $methodName */
+        $methodName = $this->nodeNameResolver->getName($classMethod);
+        return $this->hasClassMethodLockMatchingFileName($classReflection, $methodName, '');
+    }
+
     public function isVendorLocked(ClassMethod $classMethod): bool
     {
         if ($classMethod->isMagic()) {
@@ -34,7 +53,6 @@ public function isVendorLocked(ClassMethod $classMethod): bool
 
         /** @var string $methodName */
         $methodName = $this->nodeNameResolver->getName($classMethod);
-
         if ($this->hasTraitMethodVendorLock($classReflection, $methodName)) {
             return true;
         }
@@ -44,30 +62,10 @@ public function isVendorLocked(ClassMethod $classMethod): bool
             return true;
         }
 
+        /** @var string $methodName */
         $methodName = $this->nodeNameResolver->getName($classMethod);
-        foreach ($classReflection->getAncestors() as $ancestorClassReflection) {
-            // skip self
-            if ($ancestorClassReflection === $classReflection) {
-                continue;
-            }
-
-            // parent type
-            if (! $ancestorClassReflection->hasNativeMethod($methodName)) {
-                continue;
-            }
-
-            // is file in vendor?
-            $fileName = $ancestorClassReflection->getFileName();
-            // probably internal class
-            if ($fileName === false) {
-                continue;
-            }
 
-            $normalizedFileName = $this->pathNormalizer->normalizePath($fileName, '/');
-            return str_contains($normalizedFileName, '/vendor/');
-        }
-
-        return false;
+        return $this->hasClassMethodLockMatchingFileName($classReflection, $methodName, '/vendor/');
     }
 
     private function hasTraitMethodVendorLock(ClassReflection $classReflection, string $methodName): bool
@@ -111,4 +109,41 @@ private function hasParentInterfaceMethod(ClassReflection $classReflection, stri
 
         return false;
     }
+
+    private function hasClassMethodLockMatchingFileName(
+        ClassReflection $classReflection,
+        string $methodName,
+        string $filePathPartName
+    ): bool {
+        foreach ($classReflection->getAncestors() as $ancestorClassReflection) {
+            // skip self
+            if ($ancestorClassReflection === $classReflection) {
+                continue;
+            }
+
+            // parent type
+            if (! $ancestorClassReflection->hasNativeMethod($methodName)) {
+                continue;
+            }
+
+            // is file in vendor?
+            $fileName = $ancestorClassReflection->getFileName();
+            // probably internal class
+            if ($fileName === false) {
+                continue;
+            }
+
+            // not conditions? its a match
+            if ($filePathPartName === '') {
+                return true;
+            }
+
+            $normalizedFileName = $this->pathNormalizer->normalizePath($fileName, '/');
+            if (str_contains($normalizedFileName, $filePathPartName)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
 }
diff --git a/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Fixture/skip_parent_contract.php.inc b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Fixture/skip_parent_contract.php.inc
new file mode 100644
index 00000000000..3e04663d868
--- /dev/null
+++ b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Fixture/skip_parent_contract.php.inc
@@ -0,0 +1,15 @@
+<?php
+
+namespace Rector\Tests\Php80\Rector\FunctionLike\UnionTypesRector\Fixture;
+
+use Rector\Tests\Php80\Rector\FunctionLike\UnionTypesRector\Source\SomeContract;
+
+final class SkipParentContract implements SomeContract
+{
+    /**
+     * @param int|string $param
+     */
+    public function run($param)
+    {
+    }
+}
diff --git a/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Fixture/skip_parent_contract_class.php.inc b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Fixture/skip_parent_contract_class.php.inc
new file mode 100644
index 00000000000..0deb9688799
--- /dev/null
+++ b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Fixture/skip_parent_contract_class.php.inc
@@ -0,0 +1,15 @@
+<?php
+
+namespace Rector\Tests\Php80\Rector\FunctionLike\UnionTypesRector\Fixture;
+
+use Rector\Tests\Php80\Rector\FunctionLike\UnionTypesRector\Source\SomeContractClass;
+
+final class SkipParentContractClass extends SomeContractClass
+{
+    /**
+     * @param int|string $param
+     */
+    public function run($param)
+    {
+    }
+}
diff --git a/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Source/SomeContract.php b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Source/SomeContract.php
new file mode 100644
index 00000000000..95f582e26ab
--- /dev/null
+++ b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Source/SomeContract.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\Php80\Rector\FunctionLike\UnionTypesRector\Source;
+
+interface SomeContract
+{
+    public function run($param);
+}
diff --git a/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Source/SomeContractClass.php b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Source/SomeContractClass.php
new file mode 100644
index 00000000000..99a207f596c
--- /dev/null
+++ b/rules-tests/Php80/Rector/FunctionLike/UnionTypesRector/Source/SomeContractClass.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\Php80\Rector\FunctionLike\UnionTypesRector\Source;
+
+abstract class SomeContractClass
+{
+    public function run($param)
+    {
+    }
+}
diff --git a/rules/Php80/Rector/FunctionLike/UnionTypesRector.php b/rules/Php80/Rector/FunctionLike/UnionTypesRector.php
index fda4e791cb8..e528741d5f2 100644
--- a/rules/Php80/Rector/FunctionLike/UnionTypesRector.php
+++ b/rules/Php80/Rector/FunctionLike/UnionTypesRector.php
@@ -33,6 +33,8 @@
  */
 final class UnionTypesRector extends AbstractRector implements MinPhpVersionInterface
 {
+    private bool $hasChanged = false;
+
     public function __construct(
         private ReturnTagRemover $returnTagRemover,
         private ParamTagRemover $paramTagRemover,
@@ -87,6 +89,8 @@ public function getNodeTypes(): array
      */
     public function refactor(Node $node): ?Node
     {
+        $this->hasChanged = false;
+
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
 
         $this->refactorParamTypes($node, $phpDocInfo);
@@ -95,7 +99,15 @@ public function refactor(Node $node): ?Node
         $this->paramTagRemover->removeParamTagsIfUseless($phpDocInfo, $node);
         $this->returnTagRemover->removeReturnTagIfUseless($phpDocInfo, $node);
 
-        return $node;
+        if ($phpDocInfo->hasChanged()) {
+            $this->hasChanged = true;
+        }
+
+        if ($this->hasChanged) {
+            return $node;
+        }
+
+        return null;
     }
 
     public function provideMinPhpVersion(): int
@@ -107,7 +119,8 @@ private function refactorParamTypes(
         ClassMethod | Function_ | Closure | ArrowFunction $functionLike,
         PhpDocInfo $phpDocInfo
     ): void {
-        if ($functionLike instanceof ClassMethod && $this->classMethodParamVendorLockResolver->isVendorLocked(
+        // skip parent class lock too, just to be safe in case of different parent docs
+        if ($functionLike instanceof ClassMethod && $this->classMethodParamVendorLockResolver->isSoftLocked(
             $functionLike
         )) {
             return;
@@ -145,6 +158,7 @@ private function refactorParamTypes(
             }
 
             $param->type = $phpParserUnionType;
+            $this->hasChanged = true;
         }
     }
 
@@ -155,6 +169,7 @@ private function changeObjectWithoutClassType(Param $param, UnionType $unionType
         }
 
         $param->type = new Name('object');
+        $this->hasChanged = true;
     }
 
     private function refactorReturnType(
@@ -186,6 +201,7 @@ private function refactorReturnType(
         }
 
         $functionLike->returnType = $phpParserUnionType;
+        $this->hasChanged = true;
     }
 
     private function filterOutDuplicatedArrayTypes(UnionType $unionType): UnionType | Type
diff --git a/rules/TypeDeclaration/Rector/FunctionLike/ParamTypeDeclarationRector.php b/rules/TypeDeclaration/Rector/FunctionLike/ParamTypeDeclarationRector.php
index dac6288e09d..fb1cb86d9aa 100644
--- a/rules/TypeDeclaration/Rector/FunctionLike/ParamTypeDeclarationRector.php
+++ b/rules/TypeDeclaration/Rector/FunctionLike/ParamTypeDeclarationRector.php
@@ -34,6 +34,8 @@
  */
 final class ParamTypeDeclarationRector extends AbstractRector implements MinPhpVersionInterface
 {
+    private bool $hasChanged = false;
+
     public function __construct(
         private VendorLockResolver $vendorLockResolver,
         private ParamTypeInferer $paramTypeInferer,
@@ -121,6 +123,8 @@ public function change(int $number)
      */
     public function refactor(Node $node): ?Node
     {
+        $this->hasChanged = false;
+
         if ($node->params === []) {
             return null;
         }
@@ -129,6 +133,10 @@ public function refactor(Node $node): ?Node
             $this->refactorParam($param, $node);
         }
 
+        if ($this->hasChanged) {
+            return $node;
+        }
+
         return null;
     }
 
@@ -170,6 +178,8 @@ private function refactorParam(Param $param, ClassMethod | Function_ $functionLi
 
         $functionLikePhpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($functionLike);
         $this->paramTagRemover->removeParamTagsIfUseless($functionLikePhpDocInfo, $functionLike);
+
+        $this->hasChanged = true;
     }
 
     private function shouldSkipParam(Param $param, ClassMethod | Function_ $functionLike): bool