Thanks Neil, I just finished this job, it was a tv commercial shot in Raw from shogun inferno. Everything was chroma key so lot of "replace with AE composition" The solution was to edit using DNG sequences in premiere, by the way I was surprised how smooth 4K Raw files are played in premiere with cuda, once you click "replace with after effects composition" and the clips are sent to AE , the comp and footage lenght is perfect the only thing you need to do is replace the footage inside AE with the same file. once you replace it AE will read the file as a sequence instead of a still image. Everyting worked in/out points lenght, size. So it wasn't that bad, just a couple of clicks
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