[SOLVED] DDJ SB FILTER FADE PROBLEM

Hello. My problem is simple. When I turn on filter fade, the track I am bringing in no longer plays in my headphones. If I change cue to the track that is playing out live that does play however play in my headphones ... but for some reason, the more important track which is the one I am bringing in goes silent.

I can push the fader up and the crossfader over and do the mix no problem. But I obviously want to keep listening in my headphones to the track I am bringing in.

The track I am bringing in plays in my headphones until I hit the filter fade button and then it goes silent. Turn the filter fade off and it comes back on again.

Why is this?