> and I definitely don't like the sound of the C6 being replaced with Cmaj7 as the first chord and later down the chart.

Please turn off the natural arrangement feature. Then you get the exact chord you requested. The “natural arrangement” feature is like handing a leadsheet to a professional musician - where you might write C6 CMaj7 and the pro musician will just look at it and think “C” with added maj7, 9, 6th etc. as they see fit.


Have Fun!
Peter Gannon
PG Music Inc.