Fantom "Flags" in Mail 7.0
After successfully upgrading to Mavericks, the "Flagged" Folder in Mail has the number "10" on its icon, indicating 10 Flagged emails. However, the folder is empty, and I have searched all other Folders and there are no instances of Flagged email.
I have done the trick of selecting all email in the Inbox and setting all messages to "Flagged", then un-flagging them, but this does not clear the "10" on the Flagged folder icon.
Our mail server is Microsoft Exchange in Office 365 (cloud).
Thanks.
Paul
MacBook Air (13-inch Mid 2012), OS X Mavericks (10.9)