Rebuild uuidlist?

Guys i did a mess. A bad script made by me, changed (a lot) of filenames in the maildir, in example almost all email filenames were changed.

I think I have to rebuild the UID <> filename mapping because dovecot is still trying to read the old file that doesn't exists anymore (it has a new name) Any suggestions?

I think this would lead to a full-download of all messages client side, right ?