I have no idea what kind of shortcut key or preference I changed.
When I select any video on any premiere timeline to "edit in audition" i end up with the audio getting split into two wav files instead of one, as the red rectangular shows. Instead of the single audio track to edit in which you can see in the blue rectangular.
***The blue rectangular I got when I dropped a video directly into audition.
Update: did some testing around in premiere, this issue only happens with clips that are on a timeline, but if I "edit in audition" from "project" (main folder with all material), I can edit it properly.