migrating mails between two cyrus servers keeping seen states

[Marcus Schopen]

Am Freitag, den 18.12.2015, 14:09 +0100 schrieb Michael Menge via
Info-cyrus:
> Hi,
> 
> 
> Quoting Marcus Schopen via Info-cyrus <info-cyrus at lists.andrew.cmu.edu>:
> 
> > Hi,
> >
> > I'm planning to move some mailboxes from a cyrus server (2.1.18 - which
> > is a kind of mail archive) to another one (2.4.17+caldav~beta9-3).
> > Playing around on a test system with copying a user's mailbox and doing
> > a following "reconstruct -r" came out with a mailbox without seen states
> > on read mails on the new system; all mails unread. Normally I move
> > mailboxes using imapsync to keep states etc., but on a number of really
> > large mailboxes the initial sync takes days. Any other suggestions than
> > (slow) imapsync tools?
> >
> Befor 2.4.x the seen information was stored in extra files in /var/imap/user
> Did you copy these files too?

Ah, it's an old Debian system. These files are stored in
eg. /var/lib/cyrus/user/t/testuser.seen. Where do I have to copy this
file on the new server to? And there is a testuser.sub in the same dir,
which contains the subfolders. What about this file?

Ciao!