It wasn't that I could not remember how I had it, it's just that I was too lazy to do it manually. Besides, I renamed a saved reg file from a previous backup in anticipation of the fix, so double clicking a reg file to restore the control bar was just much easier and quicker.
I run an overnight scheduled task that does a granular backup up of most of the Sonar settings to their respective reg files. One for keyboard shortcuts, one for colours, one for the control bar, etc ....