When we attempt to sync a DPX sequence with a .wav file with 4 audio channels and create an h.264 file sending the audio straight across (either via pass-through or mapping with no channels re-mapped) the audio mapping on the h.264 file is altered ch.1 = Ch.2, ch.2 = ch.3, ch.3 = ch.1, ch.4 = ch.4.
This only happens on the h.264 deliverables not on others like DNX, Prores, etc.
We can reproduce that here. We will let you know when there is a fix.
Actually, it seems like I was having some monitoring issues here and I cannot reproduce this issue. Can you send us the logs including the render xml files?