Obj export joins disjoint meshes on same layer

Just curious, in the file below, exporting as .obj with the setting “Export layers as groups” and then re-importing in Rhino has all the meshes on a layer imported as one single disjoint mesh. Any way to prevent that, or it it just the “nature of the beast”?

Also, any way to keep the layer colors and transfer them to the objects?

ObjExportByLayer.3dm (281.7 KB)

Yeah… I cannot find any setting so far (V6) where the layers to not make disjoint meshes in the obj…

I’ll mess with 7, I do not know if there have been any changes…