Unable to send to Audition from multicam sequence

I am working on a new project. The last few projects I have been able to send audio to Audition from multicam sequences with no problem. With this new sequence, the optino is greyed out. A sright audi ofile does who the option, but not from multicam. I've tried rendering the audio, but nothing. 

I have recently done a number of projects recently editing from the same cameras with no problem, but this is a total pain. 
Premiere 15.4.1 (build 6)

Audition 14.4.0.38

Windows 10