Once in RB this is not necessary.
Just make sure to save it as a SEQ file. Then the original SGU is safe, plus:

Now when you Save it in RB a backup copy of the previous version is stored in your RBBackup folder .. so you always have a 'working copy'.

To open the previous version use File - Open Special (or Open Backup, depending on version).


I do not work here, but the benefits are still awesome
Make your sound your own!