Why can't I see my data which was entered and saved on a form when i try to reopen it? it always worked before until this spring 2014. The data is actually there when I click on a box but disappears when I go to the next box. I have a Mac.

I am using a Mac and I have always filled out the same form (ocf-6 from ontario insurance companies, application for expenses)  It stopped letting me go back and open the previously saved forms which i filled out and I have saved monthly for the past 5 years. Now when I open a previously saved month /file I cannot see the data I inputed.  The data is there because when i highlight a box the data appears. then when i move onto the next field/box it disappears. I tried to highlight the whole document but nothing shows up. This problem started in the spring ,2014.