RegistrationState not available for server OS VDA's

[rojobull]

I am only able to retrieve the registration state for Desktop systems but not for Server OS systems that are providing applications. The registration state for Desktops is found in the xendesktop:powershell:GetXDMachine7.ps1 source, I expected to find the same there for Server OS systems but it is not there. I searched in all of the other sources and I'm not able to find registration state anywhere else. This seems rather strange to me. Other than this, the app seems to be working fine.
One note, at the moment I am only collecting data with the universal forwarder from each of the XD controllers. I did not install the forwarder on any of the VDA's.

Thanks,

I'm running the latest version of the app.
Splunk server version 7.1.0
Universal Forwarder version 7.1.0