I’ve set the module track with zeros for now.
As i understand, the problem is that track 14 midi cc messages are sent in omni mode.
It is probably a bug.
The first encoder when in the adsr page (green leds) is by default outputing cc 5 and corresponds to the portamento time on the 0-coast.
That why it glides when the attack on the opz is not at minimum.
We should have a way to disable the midi cc on the fly because when you want to blend internal and external synths just like you said (it’s cool!), the latter is influenced by the op-z synth sound parameters.