[Tagging] Tagging an old bus route

[Arlindo Pereira]

Hi there,

I mapped a bus route that is integrated to the subway line (uses the
same ticket) [1]. However, this route will be no more, because we've
built another subway station, which would change the bus route. I'd
like to maintain the old route to historical reasons. How should it be
tagged?

Cheers

1: http://www.openstreetmap.org/browse/relation/76461