I am slowly learned how to adapt to the idiosyncrasies of the Integra-7. I discovered that my unit defaults to "USER 1" as the default "set" after it is turned on, although I have set the system to load the Rock band Set 6 as the default; I just tried hitting {Shift} {Edit} and the unit responded that I successfully wrote something, so maybe it is in permanent memory now. I will find out later.
My next step is to try to get an instrument to function on Midi Channel 2; I have the organ working on Channel 1, if I execute a patch change for every midi song at the beginning that sets the "set" to 6. I also have to manually set the volume by an controller event for every song, since the controls in the SONAR console seem to have little or not effect on the INTEGRA-7.
I am assuming if I assign a SONAR track to the Integra-7 and Midi channel 2 that the unit would play whatever sound was preloaded into Part #2, but no ................ if I do that, the Integra-7 goes blank, loading USER 1 set, which is not defined yet. Apparently, it doesn't like any Midi channel but #1, maybe because I told it that the Global Midi channel is #1, and that is all it will respond to.
The mystery deepens. Well, at least I have one channel working.