[Talk-GB] National Byway - create new relations for unmapped sections or update existing ones?

[SomeoneElse]

I stumbled across a section of "National Byway" today near Colsterworth 
in Lincs.

This page:
http://www.nationalbyway.org/regions.asp
suggests it's divided into 10 regions, one of which is the East Mids, 
which this bit of it would fall into.

The OSM wiki page http://wiki.openstreetmap.org/wiki/National_Byway 
suggests that relations are being created for various sections, one of 
which is the "National Byway in Rutland" (which seems to include part of 
Leicestershire and a bit of Lincolnshire as well), ending just S of 
Colsterworth.

My question is, do I stick my new bit on the end of the "Rutland" 
section so that it becomes more like an "East Midlands" one (to match 
the National Byway web site's own divisions) or create a new one for 
Lincolnshire and move the Lincolnshire end of the "Rutland" section into 
that?

Obviously I can bung "network=national_byway" on the ways concerned 
immediately (assuming that's still the done thing).

Cheers,
Andy