I think you missed the possible bug...
"If" I click "SAVE" it indeed saves the PL and the "ALL" audio setting.
If you click "SAVE ALL" (open systems) it changes the "ALL" <audio setting> to analog.
Why should two different SAVE commands, save files in two different ways?
Also, while the 996 is not a Motorola radio, I have two that can do dual mode receive by simply designating the PL/DPL in addition to analog and digital mode. Within the logic when it detects digital P25 it ignores the PL / DPL.
My concern is not with how the radio works, but with "why does the 996 software save files differently depending on if you use SAVE or SAVE ALL?