Well, to my dismay, I just found out from Adobe support that there is currently no solution to this. The only current workaround is to import the video file into the AE comp seperately, and match the ins and outs manually. The importers in Premiere and After Effects are different, so dynamic link does not recognize Cinema DNG files as video- just a still image.
I’ve just made a feature request… What a pain. Here I was thinking adobe had a bulletproof workflow for my blackmagic pocket camera files… Hope they get on this soon!