We're exploring possibly migrating over from Custom Game Servers to an external Game Server Provider, (& possibly sticking with PlayFab matchmaking for now). & eventually we might then switch back from the external provider and use Thunderhead / the new matchmaking.
We don't want to interrupt our existing Custom Game Server integration while testing this external game server provider.
Does checking the "Use external game server provider" checkbox under General cause existing custom game servers/matchmaking to stop working? Or can we run both in parallel while developing + testing using the external service provider for different build version?