Reply to Recording in to Traktor or best way with this setup?

I have an audio 4. I use TP2 and use a couple of midi controllers (VCI-100, internally mixing). My b2b partner uses 2x cdjs and mixer (no Scratch). I use 1 channel of the mixer for all my output, say channel 1 and he uses 2 & 3 or 3 & 4 for each left and right deck.

Can I record in to Traktor, via the audio 4, via line out of the mixer, without setting my setup to external (as I mix internally)?

Or is there some other way? I have found a guide about recording in Traktor, but it doesnt mention the Audio4 and isnt clear whether I can do it using our setup - http://www.traktorbible.com/articles...nal_mixer.aspx

I use Ableton also, but its very similar to how Traktor would record, so both go hand in hand I guess.

Ps. I could test this, but I'm at work and thought I'd see if its possible before testing.

Thanks.