OBS 3 tracks record - not recognizing audio tracks in Camtasia

[psycfitness]

I setup OBS where my Mic records on track 1, background music on track 2, and video on 1,2,3,4,5,6.

When I import into Camtasia Studio - it is not spiting the audio into 2 tracks.

Anyone familar with Camtasia and its ability to import 2 track audio?

Thanks.