Revit 2019 question - hidden lines for IMPORTED 3D object

Hi guys

I have a blank newly created Revit file using Architectural template, import a 3D model from a 3rd party (not created with Revit)

In level 1, the object shows as hidden lines
In level 2, the objects shows as wireframe without hidden lines

Toggling the hidden lines show/hide on the ribbon has no effect on the imported object.

the level1 and level 2 is the default ones…

Any thoughts?