We fill in a form on the behalf of a customer. 

The customer is sent the share link that enables them to edit the form we have pre-filled.

This pre-filled form is integrated and updates ZOHO CRM Custom Module

When the customer enters new data or updated data into the form and clicks submit, why doesnt the integration happen again in ZOHO CRM?

Basically, why are edited forms only integrated on their first submission but not on subsequent submissions too?