The Azure Sunset issue should now be fixed. I have not deleted the Azure_sunset page. Deleting pages seems to be a Wiki no-no!
You're a star. how did you do it?
I used the "move" option to set up a new page exactly the same as the old one but with the correct title. The Wiki would then automatically redirect everyone who visited the old page to the new one, but as there were only a couple of pages that linked there anyway I changed the links on those pages manually :-)