When you modify a menu, you have a "save" button and an "okay" button. The implication is that if you hit "save," you give your template a new name; and that if you hit "okay," you'll replace the template you were editing.
I've never found that to be the case. I'm always prompted for a name, and I cannot replace the original. I wind up with two of them, and I have to delete the old one. Jerry Schwartz