I had pretty similar problem lately.
Just rendered out baked qt and readjusted in fcp all zoom ins.
I was lucky as i just had 1080p but the idea is the same.
In the other hand there is not reason for BM at the moment to go deep on that
as we have to wait out what will go one with fcpx round tripping.
—
Margus
https://iconstudios.eu