[Zubersoft]

Geoff's recommendation is a good one - creating periodic backups is a really good idea, regardless of using the sync feature. 

As far as the two-way sync, that is expected behavior because I don't currently track the deletion of objects in the database. So when MobileSheets encounters something that one device has that the other doesn't, it assumes it is new and should be added. Addressing this is on my (very large) list of things to do.

Renaming a song is not inherently problematic. MobileSheets will do its best to try to figure out if a song was renamed, and if that is the reason for why it doesn't match up to what is in the cloud folder, but in the worst case, it just deletes the old song and creates the new. If files are being left behind in your sync folder, that's definitely not a great thing (as it's wasting your Dropbox storage space), but I don't think it will cause any issues for MobileSheets. That is something I will have to look into though if you are seeing that regularly.

I think you can continue to use the sync feature though for what you are doing.

Mike