Yes, very strange, because 7199R and 1853A were both running on
the same day. But on that day (last Friday IIRC), 1853A should be
replacing 3739J.
Today, both buses are on 182 again, with 1853A replacing 3739J
again, which was on 243w.
So that means 1853A is still an SP bus, I originally thought both
7199R and 1853A became perm, with only 1778J kicked out.