Using the 3dm importer, the objects get different UV’s compared to what I have in Rhino. Seems imported objects just get box mapping - sometimes with tiling? Exporting an FBX out of Rhino gives correct result.
Hello.
If the issue you are experiencing doesn’t match with one of the known issues logged here: Unreal Engine Issues and Bug Tracker (Search Results)
Then please file a new bug report for our staff to investigate here: https://unrealstudiohelp.epicgames.com/s/case-community-page
Thank you
Thanks - new here, so didn’t know the Issues section 
Seems to be same problem as ticket UE-59834