How to determine what audio needs processing at mixdown?

In Sonar, when I go to mix down audio, Sonar first says "processing audio data".  Once its done all that processing it will move on to mixing down audio.
 
So I understand that I have some audio in my project somewhere that needs to be processed.  Either I need to bounce to clips somewhere or I have some audiosnap work that has not been rendered offline etc etc.
 
So my question is:   Is there some easy way to determine what audio requires processing?  This project has over 70 tracks and I don't know what it is that Sonar needs to process before mixdown but I would like to know because I am making multiple mixes of this project and don't want to have to wait for this processing every time.  Thanks.  Hope I'm making sense.

Melodyne does not need to be bounced as audiosnap does.  It works seamlessly in the background.  Now with 70 audio tracks...it might be a good idea to bounce anything that has processing.

I am curious about the OP's question as well. I was messing with Audio Snap one day on a project and saved it at some point, but did not notice till I reopened it about month later. Luckily I only had three audio tracks, so bounced all three, but I had gone through and disabled audio snap on each track. Apparently I had adjusted the audio, but like the OP I had no idea "which one." I was getting the pop-up when the project was opened, but was not sure of a way to check the tracks visually (and the inspector was saying that AS was disabled).
 
Is there a quick way to verify what clips have had AS used and mistakenly forgotten to bounce? My take-away from that experience was "always bounce" after closing AS.