can't create public folder mailbox in exchange 2013

I have just installed exchange 2013 in a exchange 2010 environment.  I have exported all info and don't care about 2010 public folder data.

I would like to just create a new PF in 2013.

Below is the error I'm getting. 

[PS] C:\Windows\system32>New-Mailbox -PublicFolder -Name PF2013

An existing Public Folder deployment has been detected. To migrate existing Public Folder data, create new Public
Folder mailbox using -HoldForMigration switch.
    + CategoryInfo          : NotSpecified: (:) [New-Mailbox], RecipientTaskException
    + FullyQualifiedErrorId : [Server=MAIL,RequestId=db13d1a9-ee62-4bd0-a542-06bc9946e412,TimeStamp=5/7/2014 4:24:09 P
   M] 226C280C,Microsoft.Exchange.Management.RecipientTasks.NewMailbox
    + PSComputerName        : mail.domain.local

results showing it's not locked.

[PS] C:\Windows\system32>(Get-OrganizationConfig).RootPublicFolderMailbox

                      IsValid                     CanUpdate HierarchyMailboxGuid                     LockedForMigration
                      -------                     --------- --------------------                     ------------------
                         True                          True 00000000-0000-0000-0000-00...                         False


[PS] C:\Windows\system32>