Rekordbox DVS - THROUGH mode on Traktor Audio 6

Hey,

I'm using the Traktor Audio 6 as my interface and would prefer using Rekordbox DVS instead of Traktor Scratch. In the test version it doesn't seem like the "THROUGH" mode is available like it's explained in the set up guide (https://rekordbox.com/_app/files/img/rekordbox5.0.2_dvs_setup_guide_EN.pdf). Any chance that this is because it's the test version or is it just not possible with the Audio 6?