A4 only sending audio to Main, not individual tracks or External In

Trying to send audio to the separate Synth tracks and the External In with no luck. Only going out to Main as you can see in my screenshot.

I have my modular setup going into the External In. I tried using the Separate Audio channels in Ableton but the sound is only going to Pre and Post FX, nothing to Trk1 or Ext1. I tried messing around with Voice Routing in the Global setting but that just turns the sound off. Any suggestions greatly appreciated.