[64GTOBOY]

I guess im not quite getting your routing . So the output from Pro Tools is on USB right? It will send audio to whichever channel has the headphone icon with the midas acting as the interface. Outputting from there to the midas aux is mixer routing correct? So if the mixer aux is set to fold back into whatever bus on your mixer that also has the channel outputs assigned from pro tools(say your main mixer outs)than it will be doubled. Since pro tools will mute the record enabled track once recording starts I don't usually worry about it doubling when the track is armed but the transport is stopped. But if it bothers me I just zero the fader since this is on the output it doesn't affect the recording. So a little more info on your signal routing I might be able to give more ideas