I am sure someone has asked this question but here goes anyway.

Actually, you're the first :)

I purchased a 91-AD and have programmed it's memory banks A and B.  I then purchase a 91-A with a 121 chip.. While it was possible to get my B bank into my B bank I am unable to make an excel file of my A bank to get it into my A bank on the 91-A. Is there some way around this or is there a way to print out what is in the A bank on the 91-AD and put it into my excel spread sheet and then export that into my 91-A using CHIRP?

Well, I guess I would expect the A band of a 91A and 91AD to be the same, since the D-STAR chip doesn't really affect the A band. However, there must be something different about it.

Can you download the A band from the 91A? Can you make a change to a single memory directly in CHIRP?

So, send me a debug.log of the least-advanced thing that fails. Either a download, a single change, or the import. I'll see if I can diagnose from here, although without a 91A here to play with, it might be a little difficult.

Thanks!