How do i upload 10 bit videos as a MOV?

I hate contouring/banding and have these gorgeous shots from a gyrostabilised jet helicopter - shot 10 bit. I can't export these from Avid as a MOV in 10 bit - only DNX120 wrapped as a MOV is allowed. I'd like to export them as DNX185x 10 bit but your insistence in the MOV wrapper kills that. I don't think MOV permits 10 bit? Not sure.

Any solutions?

Thx

ProRes 422 or ProRes 422 HQ for higher quality