Predicament resolved!!!
As President Gerald Ford once said, "Our long nightmare is finally over".
I am not mechanically gifted so I normally have to follow instructions TO THE LETTER. In this case, I was under the false assumption that when I cloned one of my radios from the other one (same model) that it copied EVERYTHING, including firmware, ESN, codeplug, EVERYTHING!! WRONG!!!
I totally overlooked that the ESN's were still different after cloning so all this exercise of getting you all involved was a complete waste of your time. I deeply apologize and hope I can help you all one day.
Here's how it resolved:
1. The ESN is printed on the rear of the BCD996P2 (at least, enough digits to confirm what you find in SETTINGS
2. Once I verified that my second 996P2 had retained its own ESN, I was home free
3. Paid my $$, got the two keys, loaded them into the right scanner, and now I'm up-to-date with TWO BCD996P2 scanners that have been upgraded for both DMR and ProVoice.
THANKS AGAIN TO YOU ALL - YOU'RE THE BEST!!!