Thanks to Maurizio ... think I will try his last backup.
But here only a proposal for organizing your rigs:
I have saved interesting rigs like this: for example: "F1-1-[old name]"
F = Frank (could be the first letter of your name or "0" or whatever - you will find it fast by pressing the up/down buttons in the "rig" field on the right side)
first 1 = clean (2 = crunch, 3 = drive, 4 = heavy drive ....)
second 1 = number of chosen rig in the category (clean, drive...) ... better use "01"
If the full name would be to long I trim it.
With this method you can easily find your "own" rigs but with the old name you know the origin and can go back to it if your own creation sucks later (for what reason ever ....)