Cannot export 5.1 audio ?

Hi there

In order to make a DCP in dcp-o-matic, I'm doing an export of my movie with 5.1 sound, and import that movie in dcp-o-matic

(I could simply drop the video file and the 6 audio files in dcp-o-matic, but since my video is in 23,98 it speeds up the video a bit, and not the audio, so I don't know how to do it)

What I do:
- A timeline set up as surround
- import my 6 audio files (C, R, Rs, etc...)
- I create a role called 5-1 and 6 subroles with corresponding names
- i assign my audio files to their subroles
- i set each audio clip as CENTER (it's counter-intuitive but I've read this here, it's from an older version of FCPX though): felipe-fenton.squarespace.com/blog/2016/...reo-tracks-from-fcpx

When I export, the result I get is a movie with 6 channels but they are all empty except one.

What am I doing wrong ?

Thank you so much !!

Actually if I set the right channel to each clip in the inspector, it seems to be working. So I guess the problem is that I was following a tutorial that is not valid for 10.3

It's been a while since I did DCP, but my 5.1 exports have always "Just worked" since I am using an Apple machine and Apples always "just work". Did they change something in 10.3 that would cause this not to "just work"? I don't recall changing the order of the channels during export, but it's possible I did. I know I did not use Roles. I never use Roles.