We're working on upgrading our 1.4.12 wiki to 1.9.0.
One thing I discovered is that template usages in 1.8.2 and 1.9.0 now require correctly matching title case. This was not the case in 1.4.12.
i.e. For Template:NavBar, pages that worked previously with {{Navbar}} in the wikitext are now broken links. Switching it to {{NavBar}} fixes the inclusion.
My first question, is this a bug or a feature? You can't safely have Template:NavBar and Template:Navbar in the same wiki database anyway, correct?
Unfortunately we now have a large number (over 1,000) of broken template links in our site if we upgrade. One possible solution is to use redirects from the improperly capitalized templates to the correct ones, which could probably be done mostly with a XML import. Any issues with that solution?