AU Plug-in vs. sub channel

Hello all-
First let me say thanks in advance for anyone kind enough to chime in on my newbie question.
Is there a fundamental difference in the way Logic routes MIDI information between AU instruments and MIDI sub-channels?
Here's what's going on:I am using an MPC3000 and would like to multitrack record MIDI data from a sequence on the MPC into Logic. I setup 3 Midi instruments in Logic from the multi channel sub-channels to record the three separate tracks being played from a three track sequence in the MPC. I have set each track from within the MPC to send over a separate channel (1,2,3 to match sent MIDI). I also have armed the three seperate tracks for recording. Logic insists on summing the data being transmitted from the three separate tracks into the one MIDI instrument track that is selected/active. And it is also routing the MIDI data back to the MPC as it is being recorded causing some kind of MIDI feedback loop.
I have verified that the MPC is sending the data separately over the three channels that I assigned by setting up three AU plug-in instruments on three separate channels(1,2,3) and successfully recording the data onto three separate tracks.
What is the appropriate workflow to record MIDI multitrack data out of a multitimbral hardware sampler/sequencer into Logic?
BTW I am a newbie as I stated above but I have read and re-read both the sections on Multitrack MIDI recording and the Environment chapter out of the reference manual.
Also, besides checking off the boxes for CHANNELIZE and AUTO DEMIX I am starting basically from scratch. Logic created a Multinstrument for the MPC when I used the Set-up assistant on first install.
Thanks again.
g5 dual 2.7 Mac OS X (10.4.9) 4.5 GB RAM, ATI Radeon 9650
g5 dual 2.7 Mac OS X (10.4.9) 4.5 GB RAM, ATI Radeon 9650

OK -
feedback issue is resolved.
Soft thru was ON and needed to be set to OFF.
but I still cannot manage to record MIDI data to seperate multi instrument sub channel tracks.
Anyone?

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Attachments:
QAM 128.jpg ‏53 KB

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