Panel memories are what you or previous owners of the keyboard have saved in them including presumably defaults from original manufacture.
Panel memory banks start with bank A then bank B followed by bank C; after that they are numbered 1 through 10.
So if it is OEM default savings in panel memories you are puzzling about then I guess you have to be specific about which bank it is that you are refering to and which panel memory numbers in that bank...
Hope this helps...
Rog