Difference between Udatasmith and the CAD importer

Hi everyone,

I’m bit confused about unreal studio Udatamith and CAD importer , i know 3dsMax has a udatasmith exporter plugin which allows for importing entire vray scenes and recreating them accurately in ue4 .

but what if i’m using vray in another DDC tool like Modo how do i manage the export import process ??

i mean we have a CAD importer plugin with unreal studio in addition to udatasmith importer ,but does each importer do the same job when importing vray materials ??.

Or let’s say i’m importing Rhino3D format via the CAD importer , is it doing the same thing as udatasmith importer process ,i mean recreating the vray materials correctly and managing the entire aspects of the scene .