MIDI channel routing issue (Beginner Cubase User)

So I set up an instance of a multi out instrument (we’ll say kontakt). When I create a midi track, it automatically routes the source to another instance of a multi out instrument track I have created (say Sine or Omnisphere), If I have multiple midi channels, I will not be able to change their routing to the correct one at once by selecting all and choosing the correct channel. I’ll have to do it individually and that’s a pain. Is there a way to batch edit by selecting all and doing basic tasks like changing the routing or renaming tracks?

If I’m not mistaken, it used to automatically set it to the correct channel before as soon as I created a MIDI track? Or maybe I dreamed it did lol.