While the actor channel for a replicated actor will close when it goes dormant, dormant actors still exist on both the server and client. This is different to how Actor Relevancy is handled: dynamic, replicated actors are destroyed on the client when they are no longer relevant. It is worth noting that dormant actors are not checked for relevancy, so if a dormant actor would otherwise go out of relevancy on a client, it is not destroyed on that client (unless you are using a Replication Graph with the Net.RepGraph.DormantDynamicActorsDestruction console variable enabled).