If you double click Install on the Visual Policy Manager (VPM), you are presented with an option to install policy again after the current installation completes. If you select Yes, all or part of the policy configuration is lost.
This is a race condition that arises from the attempt to reinstall policy within a very short period of time.
Upgrade to SGOS 126.96.36.199. In this version, the warning message is different and doesn't allow policy installation before the first installation is complete.