I am trying to use the Studio 1810C Line Outs to send signals to a Mixer. When I run a cable from the Line Out in the interface to the Line In on the mixer... each channel (3-6) play the same thing even though in Ableton I have a Kick going to channel 3 and a snare going to channel 4. Channel 3 and 4 have both the Kick and the Snare in them when sent to the mixer. When I use the main channels (1-2) I can separate tracks between my monitors. Is it not possible to separate tracks for the Line Out (3-6)?