I really haven't ever needed it, till now.
I always back it up after force format, when I make changes. But I haven't ever needed it.
when I tried to upload programming to a new processor, only partial information was there. I used several SD cards and many attempts but never could get it to work.

Is there some trick to this?

Does the new processor have all the require licenses? Is the version the same or higher?

Both ACTU3 5.20
Licenses
The old processor has 84 basic but only 68 in use. It also has some IP end points, not in use

New Processor has 72 basic. Both have 4 LVMU.

RNA - I sent you a PM with an idea... ~ Mike