Microtonal composing challenge

I am composing in 53-note-to-the-octave music. I have a 72-note-to-the-octave generalized keyboard. It's a honeycombed Starrlabs keyboard with six ranks of white and black keys. Each rank outputs to a different channel. I need to have six channels coming in via six MIDI channels. It's as if I had six keyboards stacked up, each outputting on a different MIDI Channel. But I need them all to merge onto one track as Sonar records it. So, on the note view, it'll have each note defined by, among other things, which MIDI channel it's connected to. If they come in as six separate tracks, it's impossible to later notate or even edit the single musical line which requires six separate channels just to play back with all these notes. Ideas?   

OK, now I want to reverse this. I want to do the opposite. You are stating that each rank could be sent to a different track, which is what I don’t want. I want all recorded on the same track but split out to different instruments. The six different instruments in this case will actually be the six ranks of the Starrlabs generalized 72-note-to-the-octave keyboard. So when I play my 6-rank, six-"instrument" keyboard, Sonar automatically records each note I play on one track as coming from six different "instruments." And that one track can then play it back and distribute all the notes back to the six different "instruments" or ranks of my 72-note-to-the-octave instrument, where each rank is pre-tuned differently. I have the tunings on Garritan Personal Orchestra already.