This one is very strange.
NR data has a VAR for this service - an XU as mentioned.
I've just pulled the RSP data for this service - and the VAR isn't mentioned at all (not even as a CAN for that service).
Looks like an error in processing somewhere in the matrix.
All the data sites that run off NR data are reflecting the XU. All the sites that (I assume) use RSP are not.
(Edit: the VAR on that train was put in on 07/12, I've reported it upstream)