So since I have defined CC’s for faders, and the faders in the MIDI Remote tab respond, by definition this must be the only CC definition operating.
As a check to see if the CC’s are getting to the track, I opened a MIDI Monitor as a MIDI Insert on the track. And when I set the track input to the MIDI Adapter and play the external keyboard, data displays in the monitor. Not so when the track input is set to the USB Midi (MIDI Remote device).
So somehow the CC data makes it to the MIDI Remote tab features, but not any further to tracks.
Also, I went into Studio Setup->Midi Port Setup and clicked the checkbox for ‘In All MIDI’ to see if the MIDI Remote stream would be merged with other incoming MIDI and thus be recognized all the way to the tracks. No change.