I have an Acroform pdf that contains a combination of text and interactive fields like dropdowns and checkboxes. I am using PyPDF2 to successfully retrieve all the field values (using get_Fields() and decrypting it with the default '' password), however once the pdf is signed using Acrobat Sign, I cannot access the interactive fields anymore. I read on another SO post that signing a pdf flattens it, however I can still access all the text fields after signing.
I have tried both PyPDF2 and the java RUPS iText 5.5.9 desktop app, and neither of them can see any interactive fields (dropdowns, checkboxes, datepickers) after signing the pdf. Is there a way to read interactive fields at all after signing?
Thank you.