Yes, I did conform to camera originals (manually, without relink function).
the thing is, Avid doesn’t propose anything that looks like DnxHD 444 in transcoding options…
Those are the options:
– While exporting AAF, what I can transcode to:

– When checking on what I can transcode my original media to, in Consolidate/Transcode window:
1) if I choose Source Dimensions:

2). OR Project dimensions (proxy off)

So I’m a bit lost here. which codec would be the closest to DnxHD 444?… He also said that Apple Prores 444 would do, but I guess it would be more painful to get the AAF back into Avid once the color grading is over, since Dnx is the native Avid codec.
The colorist in offline now, we are on different continents.
Thank you for your answer again, Michael!!!