Elektron Musical Instruments

probably a stupid question, I am a complete m-idiot as I slowly 
upgrade my knowledge from mid-70s analog to today's world.

Last night, I decided to finally try out the midi machines.  I edited 
a drum kit to add a midi machine on channel 13.  Plugged midi out to 
midi in on a Korg MS2000r, set the Korg to receive on channel 13.  
Set up a simple bass sequence and let it fly.  Worked great, timing 
seems real tight. I then saved the kit in order to retain the midi 
sequence and setup.

But when I switched patterns from the one with the sequence to one 
without, the Korg continued to sound the last note as a constant 
drone with no attack.  Switching back to the pattern with the 
sequence, the notes now played as part of the drone but there was no 
attack and no silences during unselected steps.

I tried this using both classic and extended mode.  My presumption is 
somehow the Korg is not receiving some kind of note off message and 
then ignores subsequent note on messages when the sequence returns.

I'm sure I'm missing something obvious here, any suggestions? Also, 
can anyone tell me what all the parameters are within the midi 
machines?  I get the pitch bend, note, and gate parameters, what do 
the others do?  My eyes are getting old and I can't make out the 
letters for the other parameters on the display.  Finally, anyone 
know when the manual for the new production OS is likely to be 
available?  Thanks.