I just installed v 8.0 and I didn't see this specific topic.
I have tried exporting GEDCOM 5.5 and 4.0 to upload to collaborative site. The site rejects the file as corrupted.
I have exported my whole file (about 22k names), a and focus groups (about 2000 names and 200 names) as a experiment.
I opened the GEDCOM in PAF as a test. The names appear but all the family ancestor links have been stripped. Some descendent links remain but when I go to them they do not show any ancestors either.
Anybody else have this problem and is there a fix?