I have pre Cuemix FX gear
I wonder if either I misunderstand the idea or if perhaps you do.... ?
CueMix does not, as I understand it, send anything to SONAR. CueMix combines anything you are inputting into your MOTU device and lets you send it back out as a Cue or Monitor mix.
SONAR grabs your individual inputs and routes them to your tracks all by itself.
Cuemix can take anything sent to your MOTU main outs (SONAR's output) and combine that with anything on your MOTU inputs.
CueMix FX, I assume can only apply effects to the CueMix.
If you really want to get the CueMix effects into SONAR you can probably hard patch yet another return... but I'm imagining a scenario that could create a hard wired feedback loop... be careful.
Does that make sense?
As always, I welcome corrections!
best regards,
mike