@ RedPhantom

I'm working in Blender Version is 4.2
You are correct, the import and export options are different from previous versions.

In the Import Dialog I created a Poser Import Preset for OBJ files, under options I ticked Vertex Groups and Validate Mesh.
In the Export Dialog I checked Selection Only, because Lafemme is mostly present when I build something for her, so I make sure, I have to deal only with the clothing.
I also chose UV Coordinates, Normals, Apply Modifiers, Object Groups and Material Groups.

Does this match your settings to a degree?