With 3999 being transferred to Fresh Pond (as per the latest post in the Deliveries, Moves and Transfers section), Fresh Pond now has every unit from 3983-3999 (minus 3989 of course)
I think that was 4260. I saw it with a Manhattanville sticker in February 2020, then with a Castleton sticker in June 2020.
Edit: I also recall D4500 2895 having portions of an Ulmer Park, a Meredith, and a Castleton sticker.