I'm not sure that you actually offered me anything useful in your post. Right now I have my amp setup to switch channels on PC 1, 2, 3 for channels 1,2 3 respectively on MIDI Ch 2.
So walk me through setting up a preset...because what I expected to work with a snapshot did not... (Remember that I'm not using MIDI CC, My Amp doesn't respont to CC changes for channel switching, only PC changes.)
MIDI Program Change #1 (CH2) On snapshot 1,
MIDI Program Change #2 (CH2) on Snapshot 2,
MIDI Program Change #2 (CH2) on Snapshot 3,