[Dovecot] Problems Converting Maildir to mdbox

[Christian Felsing]

Hello,

I would like to convert all users mail from maildir to mdbox. My Dovecot
version is 2.0.1, converted from 1.2.13 but config was rewritten from
scratch.

http://wiki2.dovecot.org/Migration/MailFormat says following:
maildir -> mdbox migration. Set mail_location=mdbox:~/mdbox
and run
doveadm convert -u username maildir:~/Maildir

but doveadm does not know a command like "convert". Is there a _working_
way to convert maildir to mdbox ? How to do that with all Dovecot mail
users (about 10000) ?

Christian