Text in form runined after inserting additional pages.

I've been working on filling out a PDF form for quite some time now and after inserting pages much of my work has been lost. Check boxes don't seem to be affected, but much of the text I've entered is gone. This issue is really strange as it's not a specific section of text that is missing, individual characters throughout the PDF are gone. Has anybody encountered this issue or is anybody able to offer some insight?