[Goath]

I know it's an old thread but as there was no solution I decided to post it. I had this problem these days. After spending hours trying to figure out I was able to resolve by routing my aux for physical outputs instead of buses. mix 5.1 for outputs 1 - 6 and mixdown 2.0 for outputs 7 - 8. On the bounce dialogue box I set the source Physical Output.