Thanks again XW-Addict. I'm still trying to grok what goes where and when. After another 'wait, what happened??' today, I scoured the manual again and found a bit in the sequencer section about changing tones (but not in the mixer section!) that says Mixer data is *saved with the step sequence*. On one hand, that makes sense because you don't really use channels 8+ anywhere outside of the sequencer. On the other hand, it seems sorta backwards to me because you set the MIDI channel and internal-vs-external for channels 8+ in the performance. After I understand the topology of the instrument more it may make more sense.