diff --git a/backend/open_webui/routers/retrieval.py b/backend/open_webui/routers/retrieval.py
index 67889deec..adb4f24ec 100644
--- a/backend/open_webui/routers/retrieval.py
+++ b/backend/open_webui/routers/retrieval.py
@@ -371,7 +371,7 @@ class RerankingModelUpdateForm(BaseModel):
 
 @router.post("/reranking/update")
 async def update_reranking_config(
-    request: Request, form_data: RerankingModelUpdateForm, user=Depends(get_admin_user)
+    request: Request, form_data: RerankingModelUpdateForm, collectionForm: CollectionNameForm, user=Depends(get_admin_user)
 ):
     """
     Update the reranking model configuration.
@@ -379,7 +379,7 @@ async def update_reranking_config(
     Otherwise, update the RAG configuration in the database for the user's knowledge base.
     """
     try:
-        knowledge_base = Knowledges.get_knowledge_base_by_user_id(user.id)
+        knowledge_base = Knowledges.get_knowledge_by_collection_name(collectionForm.collection_name)
 
         if knowledge_base and not knowledge_base.data.get("DEFAULT_RAG_SETTINGS", True):
             # Update the RAG configuration in the database
@@ -1027,6 +1027,7 @@ def save_docs_to_vector_db(
     split: bool = True,
     add: bool = False,
     user=None,
+    knowledge_id: Optional[str] = None,
 ) -> bool:
     def _get_docs_info(docs: list[Document]) -> str:
         docs_info = set()
@@ -1049,9 +1050,9 @@ def save_docs_to_vector_db(
     )
 
     # Retrieve the knowledge base using the collection_name
-    knowledge_base = Knowledges.get_knowledge_base_by_collection_name(collection_name)
+    knowledge_base = Knowledges.get_knowledge_by_id(knowledge_id)
     if not knowledge_base:
-        raise ValueError(f"Knowledge base not found for collection: {collection_name}")
+        raise ValueError(f"Knowledge base not found for collection: {knowledge_base}")
 
     # Retrieve the RAG configuration
     rag_config = {}
@@ -1204,6 +1205,7 @@ class ProcessFileForm(BaseModel):
 def process_file(
     request: Request,
     form_data: ProcessFileForm,
+    knowledge_id: Optional[str] = None,
     user=Depends(get_verified_user),
 ):
     try:
@@ -1215,9 +1217,9 @@ def process_file(
             collection_name = f"file-{file.id}"
 
         # Retrieve the knowledge base using the collection name
-        knowledge_base = Knowledges.get_knowledge_base_by_collection_name(collection_name)
+        knowledge_base = Knowledges.get_knowledge_by_id(knowledge_id)
         if not knowledge_base:
-            raise ValueError(f"Knowledge base not found for collection: {collection_name}")
+            raise ValueError(f"Knowledge base not found for collection: {knowledge_base}")
 
         # Retrieve the RAG configuration
         rag_config = {}
@@ -1372,6 +1374,7 @@ def process_file(
                     },
                     add=(True if form_data.collection_name else False),
                     user=user,
+                    knowledge_id=knowledge_id,
                 )
 
                 if result:
@@ -1423,6 +1426,7 @@ def process_text(
     request: Request,
     form_data: ProcessTextForm,
     user=Depends(get_verified_user),
+    knowledge_id: Optional[str] = None,
 ):
     collection_name = form_data.collection_name
     if collection_name is None:
@@ -1437,7 +1441,7 @@ def process_text(
     text_content = form_data.content
     log.debug(f"text_content: {text_content}")
 
-    result = save_docs_to_vector_db(request, docs, collection_name, user=user)
+    result = save_docs_to_vector_db(request, docs, collection_name, user=user, knowledge_id=knowledge_id)
     if result:
         return {
             "status": True,