I had a rewrite rule that rewrote our old permalink structure (/YYYY/MM/DD/post-id) to the canonical ?p=post-id version. It didn't redirect, just rewrote.
After upgrading to 2.6.3 however, that rewrite doesn't work. The old permalinks now give 404 errors. I've been able to fix it temporarily by changing the rewrite to a 302 redirect, but that's not the ideal solution because what the browsers gets now is *two* redirects; my 302 redirect to the ?p=post-id URL, and then a WordPress-provided 301 redirect to the new permalink.
Does anybody know what I need to do to get internal rewriting working again? Thanks.