Lol! I see.
I guess I should’ve mentioned that I have tried to come up with a working solution for this seemingly simple task for several months. I have tried various different PLE approaches in combination with Macros.
What I found was that Instrument Tracks are the odd ones out in Cubase and this is especially highlighted when it comes to various operations such as selecting and hiding tracks. When trying to hide an Instrument Track that has multiple outputs enabled only the “default” stereo out is affected.
(Here are some other oddities that only seem to affect Instrument Tracks with multiple outputs.)
I have tried to come up with various workarounds, such as using several PLEs to get all the automation/channel lanes in the Project Window of the additional outputs of such instrument tracks selected to then invoke a Hide command. It’s been a frustrating ride and I haven’t found a viable solution yet.