Update app.py

app.py

@@ -145,7 +145,7 @@ def convert_ci(by_line_item_file, combined_file, password, max_rows):
     # Replace the incorrect MID
     mapping_df = pd.read_csv("MID_replace.csv")
     mid_map = dict(zip(mapping_df["SHEIN_MID_Code"], mapping_df["Replacement"]))
-    merged_df["MID_Code"] = merged_df["MID_Code"].map(mid_map).fillna(merged_df["MID_Code"])
+    merged_df["MID_Code"] = merged_df["MID_Code"].apply(lambda x: re.sub(r"[^\w]", "", x)).map(mid_map).fillna(merged_df["MID_Code"])
     
     # Save merged output partitioned by user-defined max_rows
     outputs = []