If you have JMRI, you can save the Mini Panel data to JMRI with the NCE USB adapter. Here is what you do:
1) Setup a new loco in JMRI with a name like NCE Mini Panel.
2) Under decoder choose NMRA, and then Raw CVs 1-255
3) Set JMRI to “Direct Byte Mode”
4) Under the CVs Tab hit “read” for CV #1
5) If it fails the first time repeat as necessary.
6) Read all CVs.
Now you have a backup of the mini panel. If you ever want to restore it, just write the CVs back to the Mini Panel.