Can you import Pr timeline audio into Au as one file?h

So I created a little testimonial video that has the speaker with some background music in there. I edited the speaker's audio in Au already and it's good, ready to go. However, there are some spots in the Pr timeline where the audio clips ever so slightly due to the music added behind the speakers voice. The video has been chopped up and is ready to be exported, but I want to get rid of some of those clips. The best way I know how to get rid of small clips is put the audio file in Au and hard limit it. I know I can right click on a clip's audio and "edit clip in Audition" but that only edits that one clip. Do I have to export the entire timeline's audio and then edit that file in audition? or is there a way to group ALL audio files in my Pr timeline and edit them in Au as one audio file?

Correct me if I'm wrong, but I'm trying to avoid exporting the timeline as an audio file, because it would compress the native audio a little every time I export it even if I export in a high Hz and bit rate.

[moved to Audition forum]