How To Update Azure Rights Management Template(s) using PowerShell
Step 1: Connect to Exchange Online using remote PowerShell - https://technet.microsoft.com/en-us/library/jj984289(v=exchg.150).aspx
Launch Windows PowerShell from a Windows 7, 8 or 8.1 with .NET Framework 4.5 or higher and Windows Framework 3.0 or higher
Run the following command: $UserCredential = Get-Credential
Type your Exchange Online user name and password, and then click OK
Run the following command: $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Run the following command: Import-PSSession $Session
Step 2: Updates Templates for Exchange Online - https://technet.microsoft.com/en-us/library/dn642472.aspx
Using Windows PowerShell in Exchange Online from Step 1
Run the following command: Import-RMSTrustedPublishingDomain -Name "RMS Online - 1" -RefreshTemplates –RMSOnline
To confirm that the templates have imported successfully, wait a few minutes
Run the following command: Get-RMSTemplate
Note: I used the default TPD Name "RMS Online - 1". To verify your TPD name, you can run the following command Get-RMSTrustedPublishingDomain