Man... I am trying to attach a screenshot and cannot figure out "how"... let me try to describe instead....
Edit... good thing I have personal website for the "url" requirement!!
Anyway... when you run WDM mode, "Omni" will accept input from any controller connected (you can play both keyboards at the same time even).
In SONAR, when I insert a MIDI track, in the track view is a drop down which I always set to "All" (the default is "Custom")... this is right above the FX bins above the tracks.
From there, you can then expand a track till you see nothing more coming into view. The "I" line is the inputs to that track... and that is where I assign the controllers. This way you can specifically assign each track as you see fit.
I *think* the way you are doing it is a "global" setting, but not sure... meaning you are either getting both (Omni), one, or the other.
Michael
I have never tried to attach a screenshot before, and it is asking for a url??? Ugh
Edit: Um... url for a picture??? Come on....