I appreciate the feedback. I am guessing the suggestion is to not use the wire to pull wire. So actually pull twice? Once to remove old and pull messenger and a second to pull new leads. Ideally leaving an extra messenger for future use.
I will use a plastic twine that my trade guys at work use to pull line in long haul elec/data conduit as a messenger line. I have seen them pull 3 or 4 hundred feet of Ethernet thru PACKED conduit with tons of bends. I was planning on sacrificing the existing transponder leads to pull the twine since they are non-functioning.