Change MBX type to Shared for non ProvisionMailbox

This is not the best, but, is better than forcing customers to deprovision their EXO Archive.

Author: dimcry

exchange/exchange-ps/exchange/Set-RemoteMailbox.md

@@ -1408,7 +1408,7 @@ Notes on the value Shared:
 
 - Shared is available only in Exchange 2013 CU21 or later and Exchange 2016 CU10 or later. To use this value, you also need to run setup.exe /PrepareAD. For more information, see [KB4133605](https://support.microsoft.com/help/4133605/cmdlets-to-create-modify-remote-shared-mailbox-in-on-premises-exchange).
 
-- You can only use Shared on a mailbox that was originally created in Exchange Online. If the mailbox was originally created in on-premises Exchange and then migrated to Exchange Online, you need to migrate the mailbox back to on-premises Exchange, convert the mailbox to a shared mailbox in on-premises Exchange, and then migrate the shared mailbox to Exchange Online. Or, you can change the RemoteRecipientType property value of the on-premises mailbox to "ProvisionMailbox, Migrated, DeprovisionArchive" by running the following command on an Exchange server: Set-ADUser -Identity "\<UserName\>" -Replace @{msExchRemoteRecipientTYpe="21"}.
+- You can only use Shared on a mailbox that was originally created in Exchange Online. If the mailbox was originally created in on-premises Exchange and then migrated to Exchange Online, take the action described on Step 3., from Resolution section described on https://support.microsoft.com/en-us/help/2710029/shared-mailboxes-are-unexpectedly-converted-to-user-mailboxes-after-di.
 
 ```yaml
 Type: ConvertibleRemoteMailboxSubType