The form generator is a really useful tool but currently, if you have a page that uses more than one form to update the same table/fields (maybe for different processes/roles/insert vs update etc.) the field ids that are generated will clash and subsequently need adjusting. Could you add some intelligence, like you have when duplicating elements, that adds an incremental integer to the id if it classes on the page?
Wappler places inp_ before the name of the input as in inp_firstname. Maybe this could change to ins_, upd_ and del_ for insert, update and delete actions respectively. This will solve the problem in most cases.