1. I'm forced to dynamic link clips from PP into AE due to a mask feathering limit of 1000
2. Those clips are dailies clips from client that were processed in Redcine-X and had redlogfilm baked into them
3. AE interprets them as REC 709
4. PP interprets them properly as RLF
5. In PP, they have LUTs applied to transform from RLF to REC, but in AE this effectively results in "double-processing" and there's an obvious color shift.
So my question is: does a redlogfilm ICC profile exist so that I can force AE to properly interpret the working space as redlogfilm instead of REC 709?
I'm not aware of an RedLogFilm icc profile. And to be honest, I am increasingly unhappy with using ICC based color management for high dynamic range content. ICC color management was originally conceived as a way to get a printer (CMYK) to output what you see on a display (RGB) — and for that task it works pretty well. The needs of film/TV are quite different though, and ICC based CMM is often less than ideal and can create unexpected results.
I figured this out on my own, no Working Space necessary (literally, "None"). I'm not sure what was happening before (maybe caching or something) but when I had it set to none, the clips still seemed to be interpreted in REC. I ended up trashing all of my prefs, disk cache, etc and starting a new project. Boom. "None" worked as advertised.