I'm sure there is an easy way to do this but sometimes I just go brain dead and this is one of those times.
I've got a facility that we had remodeled a portion of a couple floors. I want to copy and use that old Revit model as a template for this new remodel of the same building. I want to remove all the old demolition and change the new construction in that old project to existing.
What is the best way of doing this?