From your photo (very useful) it seems you've routed Track 7 directly to one of the outputs on your audio interface rather than to the mixer master in Audition. For that reason it WOULD affect everything else since you can only have one thing going directly to an interface channel.
I'll try and fire up my system and get you a screen shot of the selection you should be making but it might not be until tomorrow my time (I'm in Australia).
Anyhow, what it SHOULD say where you have (01M) Speakers and Headphones is simply "Master".
The very bottom track on your screen when you scroll down should be your master track and that one can be routed to your interface--or you can also do this on the master fader of the mixer screen.
The pessimist sees the glass as half empty. The optimist sees it as half full. The realist just drains the darn thing and gets a refill!