Replicated RENAME leaves "empty" entry in mailboxes.db

Hi,

I asked this question on IRC yesterday, but I didn't get any response. 
Maybe someone here knows?

[4:08pm] hagedose: Is it expected behavior that a replicated RENAME leaves 
an „empy“ mboxlist entry?
[4:08pm] hagedose: We’re experimenting with replication from a 2.4.20 
server to a 3.0.5 server.
[4:09pm] hagedose: We used sync_client -u to replicate a user, then deleted 
a mailbox on the master and synced again, to find out if the delet would be 
sent to the replica.
[4:10pm] hagedose: It is sent: „APPLY RENAME %(OLDMBOXNAME 
user.testuser-clotho1.diesisteintest NEWMBOXNAME 
DELETED.user.testuser-clotho1.diesisteintest.5A8D8932 PARTITION imap2“
[4:10pm] hagedose: On the master the original mailbox doesn’t appear in 
ctl_mboxlist -d, but on the replica it looks like this now:
[4:11pm] hagedose: user.testuser-clotho1.diesisteintest	16 (null)
[4:12pm] hagedose: I’m not sure if that is harmless or not?!

FWIW, when I do an IMAP LIST for that account, the mailbox with the 
"(null)" partition is not listed. So I guess it's just cosmetic, but I'd 
like to be sure it won't cause problems down the road.
-- 
    .:.Sebastian Hagedorn - Weyertal 121 (Gebäude 133), Zimmer 2.02.:.
                 .:.Regionales Rechenzentrum (RRZK).:.
   .:.Universität zu Köln / Cologne University - ✆ +49-221-470-89578.:.

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