In the overbridge plugin, have you selected a multi-output version of it (it’ll be something like 4 mono tracks, one stereo. EDIT just checked, I use Multi-output 1 x stereo, 5 x mono)? If it’s just the stereo version you’ll only get the main stereo out, but you can select other versions when you add the plugin to the track.
I’d probably recommend starting from scratch to start with, adapting an AR template for the A4 may work, but if you start from scratch you’ll figure out how all the routing works and be able to create a template that works for your own workflow. The method I outlined for the DT works just the same for the A4, you just have fewer tracks to work with