How can I backup a user variable?

[Bob Frazee]

I created some user variables (Lists in this instance) from the Home screen of the physical calculator. Now I want to backup the Lists to my PC. There doesn't appear to be a way to do that. I tried using "Backup" in the CK, but when I "Restored" the calculator, the user variables were not reloaded to the physical calculator. I tried using "Clone from here", which turned out to be a not so pleasant experience. I used it incorrectly, and it merrily wiped out all my user variables, with not so much as a warning dialog box. Is it possible to backup user variables? Am I missing something? Thanks in advance.
rcf