Hi Jacob,
good to see you here. How are you?
I quickly tried to make it work. I got it 99% working, but not 100%.
It’s not the first time that there is a difference between un-colormanged and colormanged modes in Resolve. I tired this with Resolve Studio 17 beta5.
I had to stay in DaVinci YRGB, converted the Blackmagic clip with Gen 4 Color Science to BM-Film, then use a color space transform to convert to ACES and export 2065-1 EXR files.
Next I load in the EXR files back in Resolve and converted back to BM-Film, did a primary grade and applied a LUT to both clips, the original BM-RAW and the ACES EXR files.
There is a slight difference that I could not get rid off.
The moment I exported the EXR files in a ACES 1.1 configuration, the results were more far off even.
I find it very confusing with that many BM color science generations, each camera has its own color space and gamma curve.
Where is a Blackmagic IDT? This would solve a lot of problems.
I hope this helps. I did not try to use Fusion in the middle as well.
Best regards
Daniel