Update app.py

app.py

@@ -98,7 +98,6 @@ with tab1:
         st.download_button("Download as CSV", df.to_csv(index=False), "text_31_binary_labels.csv", key="download_csv_tab1_31csv")
 
         ascending_headers = sorted(mutation_site_headers_actual)
-        df_sorted = df[[str(h) for h in ascending_headers if str(h) in df.columns]]
         df_sorted = df[[str(h) for h in ascending_headers if str(h) in df.columns]].copy()
         
         if "3614" not in df_sorted.columns:
@@ -149,7 +148,7 @@ with tab1:
         # === Robot Preparation Script (Based on Ascending Order 3244 → 4882) ===
         st.subheader("Robot Preparation Script (Based on Ascending Order 3244 → 4882)")
         
-        df_sorted_ascend = df_sorted.copy()
+        df_sorted_ascend =df[[str(h) for h in ascending_headers if str(h) in df.columns]].copy()
         
         # Only insert 'Sample' if it doesn't already exist
         if 'Sample' not in df_sorted_ascend.columns: