I encountered a problem dealing with the state of a filled form. If I fill (and save) a form using Acrobat Pro the changes are seen when opening the form in Acrobat Pro again, but not in Acrobat Reader 9.x. If I start filling it with Acrobat Reader the changes are only seen when reopening the form in Reader - but not in Acobat Pro.
Has someone else mentioned that behaviour?
I use Adobe Acrobat Pro 9.0.0 and Adobe Reader 9.1.0
Are you using a Mac?
Macs have an Apple program called Preview, which will open PDFs as well.
The behaviour you are describing sounds like Acrobat > Preview > Acrobat experience.
Can you provide more info?
Is the form Reader Enabled?
See here for details: http://assurehsc.ie/blog/index.php/2010/05/using-livecycle-forms-in-acrobat-and-reader/
If the form is not Reader Enabled, then data that is inputted into the form when it is opened in Reader will not be saved.
I am surprised that the data is not visible in Acrobat, when it still persists when reopened in Reader.
What versions of Acrobat and Reader are you using?