@ -323,7 +323,7 @@ class Base(db.Model):
new_data.append(rel_data)
new.remove(same)
del new_data[same_idx]
for i, (ch_item, ch_update) in enumerate(changed):
for i, (ch_item, _) in enumerate(changed):
if ch_item is same:
changed[i] = (rel_item, [])
db.session.flush()