There are many pieces of this puzzle that need to be in place in order for you to use the Karma,Triton, Trinity series keyboards.

1) you must always be in SEQ mode. Most of this keyboards offer a Performance, Song, or Combi modes. But in order for the Korg to be in complete 16 part mulitimberal mode, you MUST be in SEQ mode
2) in OMS, your KARMA module must transmit on ONLY 1 channel and receive on all 16 channels.
3) In DP3, you must be in MULTIRECORD mode