Hi Gordon

Well what an odd one.
The problem seems to be that the mgu sends a patch change on ch5 that is being used for the thru voice
This can happen if two tracks try to use the same ch no, the last patch change sent to that ch becomes the active one, regardless of which track it comes from.
I will keep looking to see if I can track down where it is coming from.

See you again soon I hope
Mike


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