A few years ago this was the permalink structure I had for my blog:
I changed these permalinks last year to this:
A plugin that goes by the name Permalinks Redirect was used, and it worked pretty well to permanently redirect older URLs to newer ones. However, after a recent WordPress update to 3.4.1 version, I noticed the older permalinks are no longer redirecting.
The problem is not with the plugin -- I have spent 2 days dabbling with every redirect plugin I could find. After a bit of Googling, I figured out the problem is with WordPress 3.4, and a bug has been already submitted.
All the older URLs are throwing out 404 errors, which is frustrating. I'd really appreciate if there's a HTACCESS redirect code, or MOD_REWRITE code (the site is using nginx, if that helps) that could be posted here.
I have very little knowledge about redirection.