Storage Manager 2019 R1

We use compellent storage in a hyperv environment.  We are upgrading our hosts to 2019.  When creating a new cluster in storage manager, when selecting the operating system, server 2019 Is not listed. In the past we've been able (and it's still in the list) to select Windows Server 2012 MPIO and Windows Server 2016 MPIO.  Anyone have any idea why 2019 is not in the list or how I can add it?  

Storage Manager is installed on a server running Server 2016. Would this be the cause?  Do I need to upgrade the server OS I have storage manager installed on to 2019 to enable this selection in the list? 

Thanks

Darrell

Edit:  I performed an in place upgrade of the server hosting Storage Manager to 2019, no change