diff --git a/src/memos/api/routers/server_router.py b/src/memos/api/routers/server_router.py
index c60e84253..a4052d313 100644
--- a/src/memos/api/routers/server_router.py
+++ b/src/memos/api/routers/server_router.py
@@ -90,6 +90,7 @@
 status_tracker = TaskStatusTracker(redis_client=redis_client)
 embedder = components["embedder"]
 graph_db = components["graph_db"]
+vector_db = components["vector_db"]
 
 
 # =============================================================================
@@ -359,6 +360,13 @@ def get_user_names_by_memory_ids(request: GetUserNamesByMemoryIdsRequest):
             ),
         )
     result = graph_db.get_user_names_by_memory_ids(memory_ids=request.memory_ids)
+    if vector_db:
+        prefs = []
+        for collection_name in ["explicit_preference", "implicit_preference"]:
+            prefs.extend(
+                vector_db.get_by_ids(collection_name=collection_name, ids=request.memory_ids)
+            )
+        result.update({pref.id: pref.payload.get("mem_cube_id", None) for pref in prefs})
     return GetUserNamesByMemoryIdsResponse(
         code=200,
         message="Successfully",
diff --git a/src/memos/memories/textual/preference.py b/src/memos/memories/textual/preference.py
index a34315918..78f4d6e28 100644
--- a/src/memos/memories/textual/preference.py
+++ b/src/memos/memories/textual/preference.py
@@ -248,7 +248,7 @@ def get_all(self) -> list[TextualMemoryItem]:
         Returns:
             list[TextualMemoryItem]: List of all memories.
         """
-        all_collections = self.vector_db.list_collections()
+        all_collections = ["explicit_preference", "implicit_preference"]
         all_memories = {}
         for collection_name in all_collections:
             items = self.vector_db.get_all(collection_name)
diff --git a/src/memos/memories/textual/simple_preference.py b/src/memos/memories/textual/simple_preference.py
index ee37d638c..cc1781f06 100644
--- a/src/memos/memories/textual/simple_preference.py
+++ b/src/memos/memories/textual/simple_preference.py
@@ -90,7 +90,7 @@ def get_with_collection_name(
                 return None
             return TextualMemoryItem(
                 id=res.id,
-                memory=res.payload.get("dialog_str", ""),
+                memory=res.memory,
                 metadata=PreferenceTextualMemoryMetadata(**res.payload),
             )
         except Exception as e:
@@ -116,7 +116,7 @@ def get_by_ids_with_collection_name(
             return [
                 TextualMemoryItem(
                     id=memo.id,
-                    memory=memo.payload.get("dialog_str", ""),
+                    memory=memo.memory,
                     metadata=PreferenceTextualMemoryMetadata(**memo.payload),
                 )
                 for memo in res
@@ -132,14 +132,14 @@ def get_all(self) -> list[TextualMemoryItem]:
         Returns:
             list[TextualMemoryItem]: List of all memories.
         """
-        all_collections = self.vector_db.list_collections()
+        all_collections = ["explicit_preference", "implicit_preference"]
         all_memories = {}
         for collection_name in all_collections:
             items = self.vector_db.get_all(collection_name)
             all_memories[collection_name] = [
                 TextualMemoryItem(
                     id=memo.id,
-                    memory=memo.payload.get("dialog_str", ""),
+                    memory=memo.memory,
                     metadata=PreferenceTextualMemoryMetadata(**memo.payload),
                 )
                 for memo in items
diff --git a/src/memos/vec_dbs/milvus.py b/src/memos/vec_dbs/milvus.py
index 5dacf0499..cc8909d34 100644
--- a/src/memos/vec_dbs/milvus.py
+++ b/src/memos/vec_dbs/milvus.py
@@ -457,14 +457,13 @@ def get_by_id(self, collection_name: str, id: str) -> MilvusVecDBItem | None:
             return None
 
         entity = results[0]
-        payload = {k: v for k, v in entity.items() if k not in ["id", "vector", "score"]}
 
         return MilvusVecDBItem(
             id=entity["id"],
             memory=entity.get("memory"),
             original_text=entity.get("original_text"),
             vector=entity.get("vector"),
-            payload=payload,
+            payload=entity.get("payload", {}),
         )
 
     def get_by_ids(self, collection_name: str, ids: list[str]) -> list[MilvusVecDBItem]:
@@ -479,14 +478,13 @@ def get_by_ids(self, collection_name: str, ids: list[str]) -> list[MilvusVecDBIt
 
         items = []
         for entity in results:
-            payload = {k: v for k, v in entity.items() if k not in ["id", "vector", "score"]}
             items.append(
                 MilvusVecDBItem(
                     id=entity["id"],
                     memory=entity.get("memory"),
                     original_text=entity.get("original_text"),
                     vector=entity.get("vector"),
-                    payload=payload,
+                    payload=entity.get("payload", {}),
                 )
             )