Keep a pdf form editable after filling it with pdftk

Question

I\'m using pdftk to fill a form but the output form isn\'t editable, when I open it on acrobat reader I\'m getting an error message: \"This document enabled extended featur

Answer 1

No. AFAIK for a PDF to be editable in Adobe Reader it has to be digitally signed by Adobe Acrobat. Obviously manipulating a PDF with pdftk changes the PDF so the signature is no longer valid.