32-bit to 64-bit migration seen flags

[ram]

I am migrating mailboxes from a 32 bit cyrus (cyrus-2.3.7) to a 64 bit
cyrus (2.3.13) server 

When I copy the mailbox seen flags(skiplist) from the 32 bit server to
the 64 bit servers it does not work. All the mails are flagged as unseen
on the new server 

Is there a way I can migrate the seen flags 

Thanks
Ram