At least one website reads to the effect that the switch was re-installed in 1986, but when it would have been removed is not indicated.
Original switch was located north of Smith Avenue. This was removed in 1976.
Ulster County installed a new switch south of Smith Avenue in 1986 and renovated the tracks to service the newly built Kingston Associates building which is north of the tracks between Cornell and O'Neil streets. A siding was installed, new crossings were installed at O'Neil and Cornell Streets. Kingston Associates (a recycling business) was switched by Conrail from 1986 to 1991 or so.
Conrail removed the switch in 1996 due to lack of traffic and lack of payment of a maintenance fee. Several attempts from 2006 to 2010 were made to bring a rail customer back to the building, but these never panned out. The lack of the switch was not a problem, just getting payment for replacing it. CSX has never been excited about putting the switch back in, but they would have to if a real customer needed to be serviced on the CMB.
EH