@@ -336,6 +336,10 @@ class DocumentUpdateByFileApi(DatasetApiResource):
if not dataset:
raise ValueError("Dataset is not exist.")
+
+ # indexing_technique is already set in dataset since this is an update
+ args["indexing_technique"] = dataset.indexing_technique
if "file" in request.files:
# save file info
file = request.files["file"]