I have a real track song that I make edits to: I mute the guitar track, and add a little reverb on other tracks. I click "save" when I am done and close the file.

My problem is when I return to the song none of these edits are in the song file and I must repeat the process over again.

Am I saving the song correctly? I wish I could tweek each real track in this way and have the changes stay that way.