PDF form feature. Is it possible to change the PDF that I uploaded without deleting the entire PDF form that I created?

Hello, Im using the PDF form feature. Is it possible to change the PDF that I uploaded without deleting the entire PDF form that I created? I want to keep the placeholders I already added. The PDF that I uploaded needed to be revised. If I delete the PDF form that I created and upload the revised PDF to start over then I will have to add all the place holders back. Im using more than 20-30 placeholders.