I haven't seen any R42 for a while. I have seen a few R32 on the morning rush hour , but I did not see any R32 last week, not even packing at the middle track of 111st st. So I guess there are only very few sets(less than 3?) of R32 running on nowadays.
By the way, I did notice that have much less delays after they swapped out R32/R42.