Import Modern Maps/Items into Unread Editor 2.0

Development World Creation
1

I am trying to convert any type of modern 3D model format into the old .t3d or .unr file formats associated with Unreal Editor 2.0. I’ve succeeded in converting some files to these formats, but when importing to Unreal Editor 2.0 it never seems to actually import anything.

Would anyone on these forums know what I could be doing wrong?

I have access to Unreal Engine 5.1.1, Navisworks Manage, SketchUp Pro, Revit, AutoCAD, Kerkythea, 3ds2unr, and UedConverter.

Please help!