Update app.py

app.py

@@ -682,15 +682,33 @@ def iter_all_input_fields():
 
     
 def prep_and_save_data(index, skip_sample, completed: bool):
+    existing = read_saved_data() or {}
+
+    base = {}
+    if 0 <= index < len(st.session_state.data):
+        base = st.session_state.data.iloc[index][COLS_TO_SAVE].to_dict()
+
     payload = {
+        **existing,  # previously saved stuff (extra keys, old schema, etc.)
+        **base,
         'user_id': st.session_state.user_id,
         'index': st.session_state.current_index,
-        **(st.session_state.data.iloc[index][COLS_TO_SAVE].to_dict() if 0 <= index < len(st.session_state.data) else {}),
-        **{k: st.session_state[k + str(index)] for k in st.session_state.data_inputs_keys},
         'skip': skip_sample,
         'completed': int(completed),
     }
-    
+#    payload = {
+#        'user_id': st.session_state.user_id,
+#        'index': st.session_state.current_index,
+#        **(st.session_state.data.iloc[index][COLS_TO_SAVE].to_dict() if 0 <= index < len(st.session_state.data) else {}),
+#        **{k: st.session_state[k + str(index)] for k in st.session_state.data_inputs_keys},
+#        'skip': skip_sample,
+#        'completed': int(completed),
+#    }
+    for k in st.session_state.data_inputs_keys:
+        key = k + str(index)
+        if key in st.session_state:
+            payload[k] = st.session_state[key]
+
     for f in iter_all_input_fields():
         key = f.name + str(index)
         val = st.session_state.get(key, INPUT_FIELD_DEFAULT_VALUES[f.type])
@@ -822,9 +840,8 @@ elif st.session_state.current_index < len(st.session_state.data):
     show_fields(STEPS[step])
 
     c1, c2, c3 = st.columns([1,5,2])
-    with c1:
-        if st.button("<< Previous"):
-            navigate(-1)
+#    with c1:
+#        if st.button("<< Previous"):
 #            if step > 0:
 #                st.session_state.step -= 1
 #                st.rerun()