[srk]

Thanks! After mucking around a bit more I actually found a workaround that seems to have worked. I found the Omnifocus Backups folder, which had a backups file from earlier in the day before I synced. I selected Revert to Backup Database from the file menu, selected the earlier file and the few things I'd entered before syncing showed up. Then I created a new idisk folder and synced to it right away. This all SEEMS to have worked so far.

Thanks again! I'll definitely consult your method if I see any old data crop up.