Yes, I'd like to see an option not to sync deleted files also. (In my case, I'd created a sync folder to transfer some mp3s from computer to Nexus 7. I only wanted a handful of mp3s transferring, so I copied & pasted some them to the created folder on my computer. They copied to Nexus 7. Great! So I removed the files from computer folder, and lo and behold, they went from the Nexus 7. Not so great! So currently after transfer to Nexus 7 has completed, I then have to move them on Nexus 7 from the sync folder to the music folder, then I can delete the pasted mp3s from sync folder on computer. It's a hassle, but at least they stay on Nexus 7). Edit: after some reading, it may be related to Read-only option. I'll check it out... Read-only didn't work either.