[Dovecot] pop3 uidl when migrating from mbox to maildir

Thank you for the reply of my previous post (http://www.dovecot.org/list/dovecot/2007-March/020716.html) now it works, but I have another question about migrating pop3 account (with leave mail on server) to maildir. On this post -> http://www.dovecot.org/list/dovecot/2006-February/011464.html you explain how to create dovecot-uidlist preserving UIDVALIDITY.

Is there someone that have build a script to generate such dovecot-uidlist?

thank you all