[Zubersoft]

If you have two separate songs, there is no way to merge the annotations from the two. As mentioned, you could just have one version of the song with one PDF, but use multiple layers in the annotations editor (tap the icon with two stacked rectangles and add a separate layer). If only one of you annotations at a time before synchronizing changes, then you could at least keep the annotations separate if needed. Or if that is not a problem, you can use a single layer, but still only one person would be able to annotate inbetween synchronizations. Two-way synchronization does not have access to the history of deleted objects in the library, so when it sees something that one device has that the other does not, it assumes something new was added and synchronizes over that change. So you really need to use a one-way synchronization, which means only making changes on one device at a time. If that is not possible, then you can use two-way synchronization but anything that was deleted will be recreated. It's just a limitation at the moment until I have time to start tracking deletions in the database so MobileSheets has context about whether something is new or not.

Mike