diff --git a/backend/settings.py b/backend/settings.py
index 133ffbdc41..6b63d48288 100644
--- a/backend/settings.py
+++ b/backend/settings.py
@@ -195,9 +195,6 @@ class _SearchCommonSettings(BaseSettings):
         extra="ignore",
         env_ignore_empty=True
     )
-    top_k: int = Field(default=5, serialization_alias="top_n_documents")
-    strictness: int = 3
-    enable_in_domain: bool = Field(default=True, serialization_alias="in_scope")
     max_search_queries: Optional[int] = None
     allow_partial_result: bool = False
     include_contexts: Optional[List[str]] = ["citations", "intent"]
@@ -239,6 +236,9 @@ class _AzureSearchSettings(BaseSettings, DatasourcePayloadConstructor):
         env_ignore_empty=True
     )
     _type: Literal["azure_search"] = PrivateAttr(default="azure_search")
+    top_k: int = Field(default=5, serialization_alias="top_n_documents")
+    strictness: int = 3
+    enable_in_domain: bool = Field(default=True, serialization_alias="in_scope")
     service: str = Field(exclude=True)
     endpoint_suffix: str = Field(default="search.windows.net", exclude=True)
     index: str = Field(serialization_alias="index_name")
@@ -266,7 +266,7 @@ class _AzureSearchSettings(BaseSettings, DatasourcePayloadConstructor):
     authentication: Optional[dict] = None
     embedding_dependency: Optional[dict] = None
     fields_mapping: Optional[dict] = None
-    filter: Optional[str] = None
+    filter: Optional[str] = Field(default=None, exclude=True)
     
     @field_validator('content_columns', 'vector_columns', mode="before")
     @classmethod
@@ -351,6 +351,9 @@ class _AzureCosmosDbMongoVcoreSettings(
         env_ignore_empty=True
     )
     _type: Literal["azure_cosmosdb"] = PrivateAttr(default="azure_cosmosdb")
+    top_k: int = Field(default=5, serialization_alias="top_n_documents")
+    strictness: int = 3
+    enable_in_domain: bool = Field(default=True, serialization_alias="in_scope")
     query_type: Literal['vector'] = "vector"
     connection_string: str = Field(exclude=True)
     index: str = Field(serialization_alias="index_name")
@@ -417,6 +420,9 @@ class _ElasticsearchSettings(BaseSettings, DatasourcePayloadConstructor):
         env_ignore_empty=True
     )
     _type: Literal["elasticsearch"] = PrivateAttr(default="elasticsearch")
+    top_k: int = Field(default=5, serialization_alias="top_n_documents")
+    strictness: int = 3
+    enable_in_domain: bool = Field(default=True, serialization_alias="in_scope")
     endpoint: str
     encoded_api_key: str = Field(exclude=True)
     index: str = Field(serialization_alias="index_name")
@@ -487,6 +493,9 @@ class _PineconeSettings(BaseSettings, DatasourcePayloadConstructor):
         env_ignore_empty=True
     )
     _type: Literal["pinecone"] = PrivateAttr(default="pinecone")
+    top_k: int = Field(default=5, serialization_alias="top_n_documents")
+    strictness: int = 3
+    enable_in_domain: bool = Field(default=True, serialization_alias="in_scope")
     environment: str
     api_key: str = Field(exclude=True)
     index_name: str
@@ -554,6 +563,9 @@ class _AzureMLIndexSettings(BaseSettings, DatasourcePayloadConstructor):
         env_ignore_empty=True
     )
     _type: Literal["azure_ml_index"] = PrivateAttr(default="azure_ml_index")
+    top_k: int = Field(default=5, serialization_alias="top_n_documents")
+    strictness: int = 3
+    enable_in_domain: bool = Field(default=True, serialization_alias="in_scope")
     name: str
     version: str
     project_resource_id: str = Field(validation_alias="AZURE_ML_PROJECT_RESOURCE_ID")