[Dovecot] using dsync to convert mailboxes looses caching options

[Timo Sirainen]

On Thu, 2011-12-08 at 16:10 +0000, Mark Zealey wrote:
> By the way, another bug I noticed with dsync is that when converting from Maildir to sdbox is that the date.saved field is not preserved - it's just the time when the first dsync command happened. Presumably it should be the mtime of the Maildir message file

With Maildir the date.saved is taken from the mail file's ctime (yes,
it's not perfect, but it's good enough for what it's used for). It's
preserved in my tests.