For a project sent to me by a user I did a Duplicate Track command. This gave me a replica that I owned that was fully functional. It left the original owner/creator’s track intact. I like this because it means if I share one of my tracks there will be a history indicating origin. After syncing the other user will see what I did on my duplication and he/she can mute or compare or duplicate to their hearts desire. I think it helps maintain the integrity of the track creators work.