Another mystery

Once again I'm trying to clear up some of the unknowns on the PNAERC roster. Today's focus is on a pair of Lackawanna MU cars that, until five or six years ago at least, were in Hamburg, PA at the Reading Company Technical & Historical Society site. Cars 4351 and 4359 are (were?) standard high-roof trailers like so many others at other museums and tourist lines. As of 2013, though, it appears that both cars were taken off their trucks as shown in the above photo by Michael Huber. My guess is that they were stripped of parts and scrapped but I haven't been able to confirm this, so they've stayed on the PNAERC roster pending confirmation. Can anyone answer whether these two cars are indeed gone?
UPDATE: This mystery has been solved!