In reply to Alan James - Rockfax:
An example of the "duplicates on 2 crags" problem you mention.
North Arete and South Arete on Foel Goch
No match for crag id:14951
are the same as Needle's Eye Arete/North Arete and The Mushroom Garden/South Arete on Creigiau Gleision
No match for crag id:3459.
The Mushroom Garden is really the shattered area up left from the latter route rather than the ridge in any case - Garry Smith is just going back to the original names for the routes (although Steve Ashton's "Needle's Eye Arete" is a much better name).