Stupid MT question for anybody who may know..

Is there a plugin or solution for MovableType that allows *both* old-style archives and new-style archives to be built for an entry? Ever since Santy wiped out my site a few weeks ago and killed all my old-school archive files, I'm getting tons of 404s for old entries (which were rebuilt with the new archive style).

I rebuilt everything with both the old and new style, but if I make changes to one, they won't propagate to the other, and rebuilding twice for every entry change sucks ass.

Thoughts?