Having the same issue. I’m trying to load multiple instruments in a custom kit with different sounds, and the parent kit’s automatically assigned routing is an issue for me. The parent track’s routing seems to override changes I make to the routing of the individual tracks contained within. I get caught in a viscous cycle: removing routing from the parent track ( —) removes the routing from all the contained tracks. But if I do that, and then manually assign routing to even one individual track within the kit, the kit automatically gets assigned a routing which overrides the other contained tracks.
Here’s the post I made recently about the issue:
https://forums.steinberg.net/t/percussion-kits-and-vsts-do-all-instruments-in-kit-need-to-be-routed-to-the-same-vst/935178