Migrating a Session Host to a different RDS deployment

Hi guys,

Currently we have two RDS deployments, which we use for RemoteApp purposes 1 deployment consists of:

- 1 single server with RD web, RDCB and Session Host role. (this was configured long time ago)

Other deployment is:

- HA deployment with 2 web, 2 rdbc, 6 session host and 2 licensing servers. No RD gateways involved.

I want to migrate the single RDS server to our HA deployment. So the connectionbroker and Web Acces roles will become obsolete.

Is there a specific way to do this? Or do I need to delete all roles, and add the server from the other deployment as a session host? (apart from all the firewall rules ofc)

Thanks!