I just came across an issue with checkboxes in interactive dynamic forms:
Some checkboxes had a binding by name (i. e. no provision for any binding in the XML).
[Actually by mistake as I have no data connection for this form anyways. But those needless bindings should not hurt.]
Many checkboxes had the same name. (Table rows with true/false-checkboxes.)
In the post-save event those checkboxes still had their values.
But after saving the PDF and reopening it, those checkboxes had lost their values. They were reset.
All other field types kept their values (textfields, drop-down-lists etc.)
I was able to solve the problem by removing the bindings.
But in mixed scenarios with prefilled forms to be filled out I could not do without bindings. [I would not use named bindings though, but some might.]
I failed to reproduce this issue in a stripped down form. The problem shows up in the big form consistently. But I am not able to provoke the problem in a very simple form.