diff --git a/optimum/exporters/onnx/config.py b/optimum/exporters/onnx/config.py
index 17daad5b6bf..563a6452290 100644
--- a/optimum/exporters/onnx/config.py
+++ b/optimum/exporters/onnx/config.py
@@ -125,32 +125,32 @@ def post_process_exported_models(
             path, models_and_onnx_configs, onnx_files_subpaths
         )
 
-        # Attempt to merge only if the decoder-only was exported separately without/with past
-        if self.use_past is True and len(models_and_onnx_configs) == 2:
-            decoder_path = Path(path, onnx_files_subpaths[0])
-            decoder_with_past_path = Path(path, onnx_files_subpaths[1])
-            decoder_merged_path = Path(path, ONNX_DECODER_MERGED_NAME + ".onnx")
-            try:
-                merge_decoders(
-                    decoder=decoder_path,
-                    decoder_with_past=decoder_with_past_path,
-                    save_path=decoder_merged_path,
-                )
-            except Exception as e:
-                raise Exception(f"Unable to merge decoders. Detailed error: {e}")
-
-            # In order to do the validation of the two branches on the same file
-            onnx_files_subpaths = [decoder_merged_path.name, decoder_merged_path.name]
-
-            # We validate the two branches of the decoder model then
-            models_and_onnx_configs[ONNX_DECODER_NAME][1].is_merged = True
-            models_and_onnx_configs[ONNX_DECODER_NAME][1].use_cache_branch = False
-
-            # Past key values won't be generated by default, but added in the input
-            models_and_onnx_configs[ONNX_DECODER_NAME][1].use_past_in_inputs = True
-
-            models_and_onnx_configs[ONNX_DECODER_WITH_PAST_NAME][1].use_cache_branch = True
-            models_and_onnx_configs[ONNX_DECODER_WITH_PAST_NAME][1].is_merged = True
+        # # Attempt to merge only if the decoder-only was exported separately without/with past
+        # if self.use_past is True and len(models_and_onnx_configs) == 2:
+        #     decoder_path = Path(path, onnx_files_subpaths[0])
+        #     decoder_with_past_path = Path(path, onnx_files_subpaths[1])
+        #     decoder_merged_path = Path(path, ONNX_DECODER_MERGED_NAME + ".onnx")
+        #     try:
+        #         merge_decoders(
+        #             decoder=decoder_path,
+        #             decoder_with_past=decoder_with_past_path,
+        #             save_path=decoder_merged_path,
+        #         )
+        #     except Exception as e:
+        #         raise Exception(f"Unable to merge decoders. Detailed error: {e}")
+
+        #     # In order to do the validation of the two branches on the same file
+        #     onnx_files_subpaths = [decoder_merged_path.name, decoder_merged_path.name]
+
+        #     # We validate the two branches of the decoder model then
+        #     models_and_onnx_configs[ONNX_DECODER_NAME][1].is_merged = True
+        #     models_and_onnx_configs[ONNX_DECODER_NAME][1].use_cache_branch = False
+
+        #     # Past key values won't be generated by default, but added in the input
+        #     models_and_onnx_configs[ONNX_DECODER_NAME][1].use_past_in_inputs = True
+
+        #     models_and_onnx_configs[ONNX_DECODER_WITH_PAST_NAME][1].use_cache_branch = True
+        #     models_and_onnx_configs[ONNX_DECODER_WITH_PAST_NAME][1].is_merged = True
 
         return models_and_onnx_configs, onnx_files_subpaths