title: ArchiveStatus Flag in Mailbox object
body: <p>Normally to get the list of archive mailboxes I use,</p>
  
  <pre><code>Get-Mailbox -Archive
  </code></pre>
  
  <p>I recently found that the mailbox object has a flag named 'ArchiveStatus' that either has values Active or None.<br>
  When I run </p>
  
  <pre><code>Get-Mailbox -Filter {ArchiveStatus -eq 'Active'}
  </code></pre>
  
  <p>the results are different(only some of the mailboxes;though I don't know if it might consist of entirely different mailboxes and hence the question) from those of the previous cmdlets'<br>
  <br>So what exactly does the 'ArchiveStatus' flag mean and are there possibilities where the flag might not have been set at all?</p>