Ahah! (Doh!) Great. Simple as that – a missed setting.
Many thanks.
Thanks Gabe,
I don’t think it is a cache issue because the update isn’t going on to the live site either. When I tried it elsewhere this problem also affected a site that I had not previously updated. I suspect that it is something located within the hosted platform.
Deleting the site did work its way through to the server eventually, but leaves me unable to change the other three.
Jon