Old MediaWiki MDC URLs seem not to be redirecting to *anything* in the new Deki MDC. E.g., we had a link pointing to the http://developer.mozilla.org/docs/Bookmark_Keywords article that currently takes you to that URL (which shows a "blank" page) instead of http://developer.mozilla.org/En/Bookmark_Keywords I've fixed this particular link on our site, but I'm going to have to audit the entire site and our wiki for "broken" MDC links like this.
These URLs don't work because they leave out the language ID, which apparently wasn't technically required although we didn't encourage leaving them out (and I for one didn't know they weren't required until recently). Can someone add a rewrite rule to do redirects that fail to include the language ID to the English version of the page?
New redirects added. Let me know if it causes any problem.