Need to recreate Arbitration Mailboxes as they are no longer available

Scenario:  You have arbitration mailboxes that are located on databases that are no longer accessible.   Although the mailbox is no longer accessible, the AD User account is still in tact.

Solution:  Disable and re-enable the arbitration mailboxes.  The Database DB04 is where the arbitration mailboxes lived but DB04 is gone.

Set-adserversettings -viewentireforest:$true

$1 = get-mailbox -arbitration | Where Database -like DB04 

$1 | Disable-mailbox -confirm:$false

$1 | Enable-mailbox