I use X1 and EZDrummer. When I insert EZDrummer from the synth rack, I choose multiple outputs and then send each sound's audio to a different track. (In my case, it's usually 1-kick, 2-snare, 3-hihat, 4-toms on one stereo track, and 5-overheads/cymbals on one stereo track—but you can do it however you want.) Then I send these audio tracks to a drum bus.
Does that work for you?