I'm not actually sure if this works

app.py

@@ -435,14 +435,14 @@ with tab2:
                 elif player_var1 == 'Full Slate':
                     st.session_state.working_seed = fd_lineups.copy()
                 st.session_state.data_export_display = pd.DataFrame(st.session_state.working_seed[0:lineup_num_var], columns=column_names)
-                
+
         export_file = st.session_state.data_export_display.copy()
         if site_var1 == 'Draftkings':
             for col_idx in range(8):
-                export_file[:, col_idx] = np.array([id_dict.get(player, player) for player in export_file[:, col_idx]])
+                export_file[col_idx] = export_file[col_idx].map(id_dict)
         elif site_var1 == 'Fanduel':
             for col_idx in range(9):
-                export_file[:, col_idx] = np.array([id_dict.get(player, player) for player in export_file[:, col_idx]])
+                export_file[col_idx] = export_file[col_idx].map(id_dict)
                 
         with st.container():
             if st.button("Reset Optimals", key='reset3'):