SONG Mode breaks SEQUENCE data when MIDI slave

I have a problem on my MPC1000 updated to V2.10. When I play the SONG mode with MIDI slave, which is controlled by an MTR master, the MPC spontaneously starts RECORDING even under the SONG mode, thereby it breaks SEQUENCE data. This symptom happens only when the MTR is in recording mode, not happens in playing mode. The SONG data was what created when the firmware was 1.07. When using the old version it never had the problem.

Is this a bug of 2.10? Or any setting is wrong?

My environment is as below:

MIDI-OUT on MTR(Fostex VF80, master, CLK mode)
-->
MIDI-IN (port 1) on MPC1000

Maybe earlier versions didnt support recording via midi clock start/stop messages and now it does. Or maybe its responding to MMC as I've never known midi clock commands to send out record status.

Thanks for the reply.

I believe that the MTR (Fostex) is apparently sending somewhat recording strobe signal in the MMC message, because the symptom never happens when the MTR is in playback mode.

Also what I feel strange is, MIDI slave sync makes the SONG MODE go to the REC state (REC and PLAY indicators light on, with metronome click sounds from MAIN OUT). What does the MPC do in this stupid operation state? The MPC's local operation never allows SONG MODE to go to REC state. This strange behaviour only appears when MIDI slave.

I looked for if the MTR had the detail setting for MIDI CLK master but could not find anything. Then I am looking for if there is any setting that the MPC can ignore the recording strobe signal even if it is sent from the MIDI master, but I have never seen it in the operation manual. Does anybody has a solution?

Thanks,
manik_66