Elektron Musical Instruments

I posted some of this on elektron-users.com and got no response, so I 
figured I'd try here...

The machinedrum can be configured with multimap such that a pattern 
plays for as long as an incoming note is held. According to the mono 
manual, it has the same functionality but it does not seem to work.

What happens instead is that whichever pattern is currently selected 
begins as soon as a note is received and it never stops playing. 
Playing other notes only restarts the patterns.

I have the SFX-6 version and have tried doing this with both external 
midi and the mono keyboard itself with both Multimap mode on and with 
it off. I have tried several different midi channel setups and I have 
verified that my midi interface is sending the proper note on the 
proper channel. It still does not work. Does anyone have any advice on 
this? It seems it used to work at one point, but I waited a long time 
to upgrade my OS and somewhere in there it seems to have broken.