Apply LUT to ProRes File in Ursa Mini 4.6K

I am shooting 2 cameras for a very simple edit of an interview. Controlled lighting, basic head & shoulders of a basket ball coach explaining diagrams. They want ProRes 1080 for simple Youtube distribution and are not interested in color grading or messing with the footage unless they have to. I have created a LUT that matches the 2 cameras (a BMPC 4K and an Ursa Mini 4.6K) quite well in Resolve. I would like to bake this into the ProRes file so the footage matches on import (most likely to Premiere). On my Ursa mini I import the LUT, and it works in the viewfinder. I find the "Apply LUT to file" button, but it is greyed out. How do I apply to the file?

I am shooting 2 cameras for a very simple edit of an interview. Controlled lighting, basic head & shoulders of a basket ball coach explaining diagrams. They want ProRes 1080 for simple Youtube distribution and are not interested in color grading or messing with the footage unless they have to. I have created a LUT that matches the 2 cameras (a BMPC 4K and an Ursa Mini 4.6K) quite well in Resolve. I would like to bake this into the ProRes file so the footage matches on import (most likely to Premiere). On my Ursa mini I import the LUT, and it works in the viewfinder. I find the "Apply LUT to file" button, but it is greyed out. How do I apply to the file?

Unfortunately that got never implemented for the UM46k. Would have been great, but BMD stopped including that model into firmware updates.

IIRC, you can record it externally, though.

... On my Ursa mini I import the LUT, and it works in the viewfinder. I find the "Apply LUT to file" button, but it is greyed out. How do I apply to the file?

On my UM4.6K, firmware 4.8, the Monitor tab allows me to Display 3D LUT, but the Record tab doesn’t have Apply LUT to File.

On my BMVA12G7, I do have the Apply LUT IN File, but it’s greyed out.

On the BMPCC4K, I have the option Apply LUT IN File and it can be set On. My understanding is it is baked into ProRes so you could go the opposite direction and make a LUT that begins with the BMPCC4K (Gen 5) and makes clips look like the UM4.6K (Gen 3). Perhaps not ideal but at least footage will match within your media. Probably best to go in the direction you want, but just do it in Post if it looks right.