Saving a form with data filled out.
The free Adobe Acrobat reader cannot save a form with data filled out. All it will save is a blank form. If you would like to have filled out forms saved, an upgrade is required for the Adobe Acrobat program.
There are two programs that will solve the program, either the Adobe Acrobat Approval or the full version of Adobe Acrobat. The Adobe Acrobat Approval will suffice is most situations where a form with data needs to be saved.
Check out the Adobe website for more details regarding the different versions Adobe Acrobat.