Hi, I'm going to jump in a do some hg mv and cp for you. This is to get a better headstart for the current aurora phase, which, btw, ends this Tuesday, December 20. I'll also have a look on whether it makes sense for to sign-off on the migrated revision or if that includes changes I couldn't speak for.
http://hg.mozilla.org/releases/l10n/mozilla-aurora/bn-BD/rev/d8caa85b4cc0, FIXED. I'll look at sign-offs later.