Failing to archive many messages

Hi,

When I archive one or two messages, the messages are correctly moved to the Archive.

However, when I archive more messages - like 50 or more, dovecot seems to fail. The error I get is this one:

Warning: Failed to do incremental sync for mailbox Archive, retry with a full sync (Modseq 17277 no longer in transaction log (highest=17323, last_common_uid=12216, nextuid=15767))

No messages end up being moved to the Archive folder. I tried to do this both from a mail client and from roundcube.

What could be the problem here?