I think the biggest challenge is round tripping UHD HDR content through and NLE and back out with metadata intact. I havent seen it done before. Personally id like to Regrain the T2 UHD release but cant find any info from someone whos done similar.
My biggest concern with the HDR metadata is getting into the NLE. Which is why I may just end up doing all of this in premier or hopefully the resolve 15 beta will allow me to import h.265 content. Cause as it stands I will have to convert the 4K source to h.264 to get it into Resolve and then I can only use that version of it to align.
As I go through this, I’m going to document my processes. So keep an eye on this thread for some of the info you’re looking for.