So I want to update my songs since I realize that most of them have not been updated and therefore do not work with the current version of Rocksmith.   However I don't have backups set up due to having a new computer and I have not made a custom in quite some time but I do keep playing this game :D   Anyway, do I have to start over and make the songs again or is there a way to import and easily modify for I remember doing this at times for quick fixes but I forgot how and couldn't figure it out