Hm, I did this, but it was an earlier version of r5. Maybe it was still a bug.
I don't know. I just mean for images/animations in general. Marian exports them as png files from cinema4d, then I convert them to webp lossless format to import into Visionaire Studio. Should work fine with both 4.2.5 & all versions of 5.x as far as I'm aware.