[IMAPD 3.6.2] mailbox missing uniqueid - howto repair ?

Hello.

One from mailboxes has some folders without uniqueid:

Dump from ctl_mboxlist -d

"domain.pl!user.username.folder 2020.folder": {"name": 
"domain.pl!user.username.folder 2020.folder", "mtime": "1720178891", 
"uidvalidity": "0", "createdmodseq": "0", "foldermodseq": "0", "mbtype": 
"el", "partition": "default", "acl": {"[email protected]": 
"lrswipkxtecdan", "cyrusadmin": "lrswipxtecda"}, "name_history": []},

I've tried :

/opt/imapd/sbin/reconstruct -rfIxoM "user/username/folder 2020/folder"

/opt/imapd/sbin/mbtool -r "user/username/folder 2020/folder"

And in imap.log there are entries:

mbentry has no uniqueid, needs reconstruct: 
mboxname=<domain.pl!user.username.folder 2020.folder> 
func=<mailbox_open_advanced>

IOERROR: read header failed: mailbox=<domain.pl!user.username.folder 
2020.folder> error=<Invalid identifier> func=<mailbox_lock_index_internal>


On spool folder and cyrus.header exists and contains:

Cyrus mailbox header
"The best thing about this system was that it had lots of goals."
        --Jim Morris on Andrew
%(T el N "domain.pl!user.username.folder 2020.folder I 
55fnn2raalx40hpwcscdlazh Q domain.pl!user.username A 
%([email protected] lrswipkxtecdan cyrusadmin lrswipxtecda {19+}

))


This Folder cannot be deleted, whole mailbox cannot be deleted.
Any operation on this folder give: "NO Invalid identifier".



Thanks in advance
AK



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