crossed ownership of mailboxes after move

[Miro Dietiker, MD Systems]

hey crackz...

after some time running cyrus, and after moving some mail contents and
accounts, i have a current strange situation:

using debian sarge stable and cyrus21-imapd 2.1.18-1...

simply look at those files:
puter:/var/spool/cyrus/mail/m/user# more me^fn/cyrus.header
Cyrus mailbox header
"The best thing about this system was that it had lots of goals."
        --Jim Morris on Andrew
user.me^fr        186806ef439bfb2e

me.fn     lrswipcda       other.fn        lrswipcda
puter:/var/spool/cyrus/mail/m/user# more me^fr/cyrus.header
Cyrus mailbox header
"The best thing about this system was that it had lots of goals."
        --Jim Morris on Andrew
user.me^fr        186806ef442d509d

me.fr     lrswipcda

In fact, i did a movement [as a kind of copy?] from me.fr to me.fn
and this way you see in the target spool folder me.fn still the
user "user.me^fr"...

Deleting the "user.me^fr" results in unavailability of the account
user.me^fn (receiving mails rejected!)

The question is: How to correct the permissions - since cyradm shows
ownership as i wanted it to (i expect this are the last lines, right?

Any inputs welcome!

Miro