It appears to be an issue with the BB coding.
Silvertones should remember the problem I reported during Beta testing about the RealDrums being out of the pocket when playing with hardware synths.
Well, it looks like the solution was to send cc123 resets out the pipe.
And those resets are also resetting the synths to GM mode.
I caught it last night with a MIDI Monitor inserted.
It also does this on other hardware synths I have here, not just the Ketrons.
Back to the drawing board on that solve, I guess...
--Mac