When I do inspections on old buildings with new tenant fit ups, I always ask the EC to "Try" to remove as much old wire as possible. Most times the EC's are very willing to work with me ( sometimes it is an extra for the job) plus it gets rid of a lot of old crap in there way. For the most part it looks a whole lot better when I go back for my "Above Ceiling" inspection. Granted they can't get rid of all of the old wires, cause some cut through other secure areas in the building.