The structural engineer linked our architectural model, which uses worksharing in our office, into their own revit model. They duplicated many walls, floors, etc. in their own Revit model and placed them on their own workset that they created. We have now linked their Revit model back into ours and it is visually a mess with all of the duplicated elements. I understand that I should be able to turn off all of their duplicated elements by turning off the visibility of the workset that they created, but we don't have that workset in our central model. What am I missing?