If one were to accept the not having to move at Albany scenario, which may or may not be realistic, you would need to look at which rooms freed up would provide the greatest yield pattern (added rooms to sell against revenue if buckets are influenced) The NY section has more crew members, would those rooms bring in more than the BOS rooms? I don't know what the numbers are in terms of percent filled and yield. Is it easy enough for BOS OBS to move, as opposed to NY since the dining car is serving at that time? It is not really worthwhile to have these cars if you can't get a good added yield.
OK. This is what I actually expect. I expect the Boston sleeper and the Boston baggage car to be replaced with a bag-dorm -- the Boston sleeper routinely has significantly lower demand than the NY sleeper, and two full baggage cars is overkill except in the very busiest days of the year. Then I expect the "Boston" sleeper to be reassigned to the New York side, where there is *plenty* of demand. Yes, this means the train into NY is one car longer, but it'll still fit on the platform, so that's fine.
And to the person who asked, yes, the rooms in the bag-dorm are saleable roomettes.