All fixed …!

The problem was exactly as you described. I tried your fixes, but they didn’t work in this case (eg. remapping cc#10 to ACTIVE put the H9’s into BYPASS exactly as you predicted, but then they stayed in BYPASS – I could load a new patch, but it would remain bypassed). However, what I did find is a setting in the RJM Mastermind that allows me to only send ‘on’ messages to the H9’s (ie. removing the problem you idenitifed of ‘on’ on press, and ‘off’ on release), and it worked perfectly.

So all good.

Thanks again for your support. Awesome as ever …!