Gotcha - in that case, have a look at
http://stereoroid.com/sounds/mpc1000/faq.php#pads06 for my preferred way of doing it. (Just ignore the Local Off stuff which you don't need to worry about here.)
The key point is: if you set MIDI Thru on the MPC1000 to "As Track", then it becomes a MIDI router.
- You can leave your keyboard on e.g. MIDI Channel 1, hook its MIDI Out to either MPC MIDI In.
- Hook up the Triton to either MIDI Out A or B
- change the MIDI parameter on the MPC's Main screen to route the MIDI to 32 different channels (16 channels x 2 outs).
- That setting applies to the selected track, so when you do it that way, recording MIDI to the sequencer is a breeze, what you hear is what you get. You just need to think about sending the right MIDI out, e.g. program changes.