Why does Revit Datasmith Export cut the geometry at the height where the floor plan's view level is at?

I have tried a default 3d view, creating a camera view, and using an existing camera from the Revit file. I have tried removing the view template prior to exporting. I have tried creating a new view template for the 3d view prior to export/direct link. I have tried using direct link, and exporting a datasmith file to disk. In Twinmotion, they all have the same result.