This is probably more a Cubase problem than a Halion one, but I was curious if someone has found a workaround.
I’ve been exploring the idea of larger Cubase templates and have a few instances of Halion in a template, using 16 slots each, and each slot going to its own audio out. When reopening the project or instancing the template, the channel editor doesn’t go to the correct audio output when the output chain is activated.
The inspector still has the correct audio out though.
I’ll quote this post from a user in the Cubase forum