As of late January '19, it appears that 28N and 287 are not operating regularly or at all east of Mechanicville. Ayer-bound racks appear to be forwarded from Mechanicville via 22K while P&W-bound racks go via 16R to ED-8 or EDPO from Mechanicville to Gardner, if I understand correctly.
Here are links to a couple of photos of 22K bearing auto racks posted to NERAIL.ORG:
Bob Sprague photo of 1/29/19: http://photos.nerail.org/showpic/?photo ... rder=new99
Bruce MacDonald photo of 1/23/19: http://photos.nerail.org/showpic/?photo ... rder=new99
Picutres of ED8 with racks have also been posted on Pan Am Railfans FaceBook page. Wonder if this is just a temporary phenomenon as post holiday auto/container traffic seems reduced?