Bit of a weird one but I've had no end of problems with Outlook 2013 and IMAP folders. Now in the past few days whenever I move an email from the IMPA account inbox to any other imap folder the file size changes to 0B. I can still open the email fine. If I move it back to the Inbox it stays at 0B size. If I move it to a PST file it displays the correct file size. If I go onto the web interface and move the email when I go back to outlook it displays the correct file size again. It is only Outlook 2013IMPA folder where the problem lies. None of these emails are large either a few hundred KB at most.
Any ideas appreciated