[Dovecot] Maildrop script to sieve

Hi,

I'm working on a system that have about 350K e-mail users and 100k users that uses maildrop scripts to make filters on their delivery. So, changing scripts by hand can't be a choice. I "googled" so much and I wasn't able to find any script that converts maildrop scripts to sieve. Does anyone knows where can I find it?

By the way, does anyone uses dovecot-1.1-beta on a production system with sieve+maildir+lda?

Thanks,

Raphael Costa