preserving flags for shared mailbox when migrating from cyrus to dovecot

Dear all,

Despite all the progress we are making in our attempt to make the migration as smooth and transparent for our users there are still some important unsolved issues. One thing that I can't figure out is how to preserve a user's flags that s/he has for mail in a shared mailbox.

So far we tried 'doveadm backup -R' as well as the cyrus2dovecot script from here [1]. Both work well for individual mailboxes but do not migrate subscriptions for shared mailboxes and -- more importantly -- flags for mail in a shared mailbox. Reconstructing subscriptions is quite easy but I have no clue on how to reconstruct a user's flags.

Any hint is greatly appreciated!

[1] http://cyrus2dovecot.sw.fu-berlin.de/index.html

j.hofmüller

mur.sat -- a space art project http://sat.mur.at/