BlueGull;
The reason for this behavior is that Studio One doesn't associate mixer channels with instrument tracks; mixer channels are associated with either instruments or audio inputs. When you assign an instrument to an instrument track, a mixer channel is created that has the name the instrument gives to it.
THE REMEDY:
If you right-click a track, at the bottom of the menu is a command that says "Apply Track Names to Channels" That will change the mixer channel name to match the track name. This will also work with multiple tracks/channels, as many as you select. To make this more efficient, I assigned the 'B' key to that command, so all I have to do is select the track(s) or channel(s) and press the 'B' key. To do that, go to the Studio One menu and select 'Keyboard Shortcuts...'.
