I just did this this morning and it really jacked up my accounts. Opening balance dates on some accounts go all the way back to 2003 in some cases (even though the QDF file wasn't created until years after that), and a few of them are correct. When I try to install a previous version, it works for a moment until the "Cloud Synch" kicks in, and then it gets ruined again. I can't figure out either what happened, or how to fix it. Anyone else have this problem - or have a fix?