Hello Everyone--
I feel like I've finally got the routing set in kontakt so every piece of the kit is routed to its own dedicated track in Sonar--except...
When I play the snare, it routes to two outputs in kontakt, and so of course it also routes to two tracks in Sonar.
I went ahead and took some screen shots of the routing configurations for both the kick and the snare. Every other piece of the kit routes correctly to it's own mono track, but when I hit the snare, it routes to the snare output and track, as well as the kick output and track.

I posted this same help request on the NI forum, and the screenshots are there:
https://www.native-instruments.com/forum/threads/kontakt-abby-road-drummer-routing-in-sonar-issue.269469/#post-1466445 Even when I hit the kick, it only routes to the kick output and track.
Please take a look at the linked screenshots of both kontakt and Sonar for the kick and the snare and see if anything jumps out at you--or even if you have some ideas on what I might try. I've tried a lot of things, and nothing works, but of course, I've missed something or this wouldn't be happening--I've used kontakt drums in multiple projects and I've never had this happen like this before.
Thank you so much!