Steps to reproduce:

1. Create a Proxy Group with multiple proxies
2. Create an auto-registration rule using HostMetadata to assign new agents to host group
3. Configure agent2 to use Proxy Group IPs and HostMetadata value.
4. Start agent2

Result:
Host is auto-registered properly. When moved to a new host group or template is removed, host is re-registered by the auto-registration rule.
Expected:
System is auto-registered and will not be re-registered unless HostMetadata changes.

Thoughts:

With the fact that I never change the agent HostMetadata value, it appears that there is no reason auto-registration should be re-run. This does not occur when using a single proxy configuration.

My belief is the Proxy Group is re-running the auto-registration rule repeatedly because the server believes it's connecting through a new proxy each time.

There needs to be a fix to allow auto-registration through Proxy Groups without it continually updating the host.