I have - for me - a strange problem.
Each time a message is wrongly put in the spam folder, then when the message is manually trained as not spam the message pops correctly to the inbox, but! each time a second version or duplicate of the message is downloaded so I end up with two of same message.
I am using IMAP, MS Outlook 2011 14.3.9, SpamSieve 2.9.11, Late 2013 15" MBP and OS 10.9 (13A3017).
My folders under IMAP > Advanced is setup as per attached screenshot.
Suggestion/idea why this happens?
Aja, when I try as I have read here to select (chose) any folder besides those on server, then none other are shown, as see on the same screenshot.
I disabled SpamSieve and enabled Outlook’s own spam filter, when a messaged wrongly was tagged as spam and I told the message was not spam it appeared in the inbox as expected, but without a duplicated message.