Yes, I do agree it should show that,
And in theory I think that the filters should be in the primary PCP, so all the FTTC cabinet has is one pair coming from it to the PCP, which would mean that the line is not so dependent upon the FTTC and its permissions to be opened etc.. to potentially diagnose faults and reduce errors
Because to provision FTTC the engineer has to divert a line, find it, join/filter it, then send it back to the pcp, Find it, Test it, Join it,
whereas if it was purely from the FTTC all the lines could be pre-linked and ready to use in the PCP, so upon installation a port can be remotely allocated and activated in the Cabinet and a pair is ready to use in the PCP, so an engineer can come along, apply a filter to the E side, and join the FTTC up via Jumpers to the existing line re-join to exchange, test and all is done,
No fiddling in the FTTC Cabinet, so you don't need so many FTTC engineers to come out of their hiding places.