diff --git a/litellm/proxy/batches_endpoints/endpoints.py b/litellm/proxy/batches_endpoints/endpoints.py
index 13542d72bd4..32501fdc54b 100644
--- a/litellm/proxy/batches_endpoints/endpoints.py
+++ b/litellm/proxy/batches_endpoints/endpoints.py
@@ -412,16 +412,6 @@ async def retrieve_batch(  # noqa: PLR0915
             "cancelled",
             "expired",
         ]:
-            # Populate _hidden_params.model_id so managed_files hook can
-            # encode output_file_id / error_file_id into unified IDs.
-            if unified_batch_id:
-                response._hidden_params["unified_batch_id"] = unified_batch_id
-                model_id_from_batch = get_model_id_from_unified_batch_id(
-                    unified_batch_id
-                )
-                if model_id_from_batch:
-                    response._hidden_params["model_id"] = model_id_from_batch
-
             # Call hooks and return
             response = await proxy_logging_obj.post_call_success_hook(
                 data=data, user_api_key_dict=user_api_key_dict, response=response
diff --git a/tests/test_litellm/enterprise/proxy/test_batch_terminal_state_hidden_params.py b/tests/test_litellm/enterprise/proxy/test_batch_terminal_state_hidden_params.py
deleted file mode 100644
index d151179cf44..00000000000
--- a/tests/test_litellm/enterprise/proxy/test_batch_terminal_state_hidden_params.py
+++ /dev/null
@@ -1,101 +0,0 @@
-"""
-Test that the terminal-state shortcut path in retrieve_batch populates
-_hidden_params.model_id from the unified batch ID.
-
-Regression: When a batch is in a terminal state (completed/failed/cancelled/expired),
-the DB shortcut path returned a LiteLLMBatch with empty _hidden_params, causing the
-managed_files hook to skip encoding output_file_id into a unified ID.
-"""
-
-import base64
-
-import pytest
-
-from litellm.proxy.openai_files_endpoints.common_utils import (
-    get_model_id_from_unified_batch_id,
-)
-from litellm.types.utils import LiteLLMBatch
-
-
-MODEL_ID = "model-xyz-123"
-RAW_BATCH_ID = "batch-provider-456"
-DECODED_UNIFIED_BATCH_ID = (
-    f"litellm_proxy;model_id:{MODEL_ID};llm_batch_id:{RAW_BATCH_ID}"
-)
-B64_UNIFIED_BATCH_ID = (
-    base64.urlsafe_b64encode(DECODED_UNIFIED_BATCH_ID.encode()).decode().rstrip("=")
-)
-
-
-def test_get_model_id_from_unified_batch_id():
-    """model_id is correctly extracted from a unified batch ID."""
-    assert get_model_id_from_unified_batch_id(DECODED_UNIFIED_BATCH_ID) == MODEL_ID
-
-
-def test_get_model_id_returns_none_for_invalid():
-    """Returns None for non-unified IDs."""
-    assert get_model_id_from_unified_batch_id("plain-batch-id") is None
-    assert get_model_id_from_unified_batch_id("") is None
-
-
-@pytest.mark.parametrize("status", ["completed", "failed", "cancelled", "expired"])
-def test_terminal_batch_hidden_params_population(status):
-    """
-    Simulate the terminal-state shortcut path logic: when a batch from the DB
-    has a terminal status and we have a unified_batch_id, _hidden_params should
-    get model_id and unified_batch_id set.
-
-    This mirrors the code added to endpoints.py lines 415-423.
-    """
-    # Create a batch as it would come from the database (empty _hidden_params)
-    response = LiteLLMBatch(
-        id=B64_UNIFIED_BATCH_ID,
-        completion_window="24h",
-        created_at=1700000000,
-        endpoint="/v1/chat/completions",
-        input_file_id="file-input-abc",
-        object="batch",
-        status=status,
-        output_file_id="file-output-raw",
-    )
-
-    assert response._hidden_params.get("model_id") is None, "precondition: no model_id"
-
-    unified_batch_id = DECODED_UNIFIED_BATCH_ID
-
-    # This is the exact logic from the terminal-state shortcut path
-    if unified_batch_id:
-        response._hidden_params["unified_batch_id"] = unified_batch_id
-        model_id_from_batch = get_model_id_from_unified_batch_id(unified_batch_id)
-        if model_id_from_batch:
-            response._hidden_params["model_id"] = model_id_from_batch
-
-    assert response._hidden_params["model_id"] == MODEL_ID
-    assert response._hidden_params["unified_batch_id"] == DECODED_UNIFIED_BATCH_ID
-
-
-def test_terminal_batch_no_unified_id_leaves_hidden_params_empty():
-    """
-    When there is no unified_batch_id (non-managed batch), _hidden_params
-    should remain unchanged.
-    """
-    response = LiteLLMBatch(
-        id="batch-plain-id",
-        completion_window="24h",
-        created_at=1700000000,
-        endpoint="/v1/chat/completions",
-        input_file_id="file-input-abc",
-        object="batch",
-        status="completed",
-    )
-
-    unified_batch_id = None
-
-    if unified_batch_id:
-        response._hidden_params["unified_batch_id"] = unified_batch_id
-        model_id_from_batch = get_model_id_from_unified_batch_id(unified_batch_id)
-        if model_id_from_batch:
-            response._hidden_params["model_id"] = model_id_from_batch
-
-    assert response._hidden_params.get("model_id") is None
-    assert response._hidden_params.get("unified_batch_id") is None