In a Microsoft Exchange Server 2013 environment, you use the New-PublicFolderMoveRequest cmdlet to move a public folder to a different public folder mailbox. In this situation, the read/unread state for each user is wiped out for all folders in the target mailbox.
This problem occurs because of a function logic issue in Exchange Server 2013.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2994216 - Last Review: Dec 9, 2014 - Revision: 1
Exchange Server 2013 Enterprise, Exchange Server 2013 Standard Edition