I have a PDF document with clickable fields (a check list). It is a list of AFI's top 100 American films of all time. When I have seen a film, I cross it off the list and save the file. With Lion, that is no longer possible. The new check marks do not get saved. I have attached three screenshots showcasing the issue. The first is "status quo" (as it looks before modifying it in Lion). The second is after clicking a field and hitting CMD + S. The third and last is after opening the newly saved file again. Is anyone else experiencing this with PDFs with clickable fields?