I'll admit it, I frequently forget to turn off arc2 room correction when I do a mixdown, especially at the end of a long night of recording...Then in the morning I remember, turn it off, and then mixdown the tracks again.
To compensate for this forgetfulness, I read somewhere (on this forum I believe) that you could just assign the master bus out to a new stereo bus that had nothing but arc 2. Then send the arc2 bus out to my interface. You could then adjust the fader on the arc channel for room volume and such without effecting your master levels. I just want to make sure that when I bounce down, I am only getting the output from the master fader (not the stuff that is being pumped out of the arc bus.) I looked in the checkboxes for audio export and I didn't see something like "sum all buss outputs together", so when I mixdown I should just be getting the Master channel, not the last buss in the chain before the interface?  (Actually upon writing this it occured to me that I could just turn the arc fader waaaay down and do a mixdown..If the bounced audio is really quite then I know my answer)
 
Any thoughts?

In the Export dialog, setting "Source Category" to Buses will permit export of a specific bus. If all the tracks and buses are routed to a master bus and the master bus is routed through the Arc2, when exporting select the master bus.

Ok, I see that. Thank you scook. I totally missed that drop down option. I'll use that option from now on.  I had it set to entire mix, so I wonder exactly what busses I was getting for my mixdowns? I still had really good translation out in my car when I was testing my mixes, but something still was still nagging in me that I didn't have things set right.

If everything was going through the master bus, the "Entire Mix" option should have given you the same result as exporting only the master bus otherwise the export was summing all tracks and buses.