When you BIND in a Linked Revit model, you can use the Phase Mapping to force everything to an Existing Phase.
But EVERYTHING come into that Phase.
If you have Demolished elements, those remain in the project and are now indistinguishable from the rest of the Existing Phase.
Revit should, preferably, just delete anything that's been Demolished.
Or we should have an option to choose to remove all Demolished elements.