I have a website where I have the free version of WPUF. I needed the fields to be accessible from back end too so after created the fields in WPUF, I created the same (same name etc…) with Advanced Custom Field so I'm able to edit these fields in the back end. Now I've added a checkbox field with WPUF and the same with ACF but it seems that ACF and WPUF give different name/ID to the field so the value in back end and front end are not the same for these checkboxes.
So I thought : I can install WPUF Pro to have the fields in the backend and remove ACF !
But how can I upgrade WPUF to WPUF Pro without loosing what I did ?