DNx Export Data flagging bug introduced in 17.5.1
17.5.1 has introduced a bug where DNxHR/HD HQX, HQ, SQ & LB MOVs are being incorrectly interpreted by DaVinci Resolve as Full when they should be Video.
Chris Brearley commented
You are correct and this has now been fixed in the After Effects 18.0 release and later. We apologize for the inconvenience.