from Cyrus to Dovecot, seen status on cyrus.index files

Hello,

Using cyrus2dovecot (https://github.com/a-schild/cyrus2dovecot) I have migrated some test mailboxes from Cyrus (2.4.17) to Dovecot (2.2.9).

The problem I'm having is that the seen status is in cyrus.index files, which cyrus2dovecot doesn't understand.

Does anyone use cyrus2dovecot for migrations? If so, how do you deal with seen status when it is stored in the .index files?

Many thanks in advance, Norberto