Remove unused levels.

Microstation Connect

I have levels in my 3D model which I have deleted everything from (actually moved them to a different model - which is referenced into the original)

No elements found when displaying.

But the level manager still says there are elements present.

I think they are features from deleted solids. 

The levels do not disappear when I compress.

Can I force a manual level delete ?

I'm using projectwise so it's not practical to just do a fence file to clear up that way.

Can I see a list of the elements microstation thinks are still there ?

Please help. My files cannot be audited with non-standard level names.

Thanks.