not sure what destinations "Contr12, Contr13" etc. are
 

are those solely for automation within a DAW or?...........

anyone know?

Do you mean modulation sources - Controller 09, 12, 13 etc.? These simply refer to generic MIDI continuous controller (CC) numbers. MIDI CC data can be generated by a MIDI controller or drawn directly in a DAW. Using the mod matrix, you can program a single controller (fader or knob or one of the Virus' "soft knobs") to affect up to 24 sound parameters.

I've never seen these controllers listed as destinations, though... :confused:

hope this helps

Indeed. If you use those as sources on the Mod Matrix, you can also then assign them for the soft knobs on the panel and control a lot of parameters at once that way - that's one of the great uses for it. Be sure to try this, it's great fun!

Like said above, it's also a general midi CC - so you're able to assign it to a midi controller or automate it from within the DAW.