I disabled a mailbox since 48 hrs and it still do not show up. I ran "Get-MailboxStatistics -Database "DatabaseName" | ForEach {Update-StoreMailboxState -Database $_.Database -Identity $_.MailboxGuid -Confirm:$false}" command and still nothing.
I created test account and deleted it after feeding it and this one appears.
The account I deleted was huge and for space convenience we decided to remove it since the one in charge left and did not do any archiving.
I really need help to get around with this issue. Any idea will help