Removing a messaging engine from a bus means that the messaging engine can no longer be used for communicating with that bus.
You should be wary of deleting and re-creating messaging engines on bus members for which WS-Notification-administered subscribers have been configured, because in some cases this can leave the remote Web service subscription active (and passing notification messages to the local server) even though there is no longer any record of it. For more information, see the WS-Notification troubleshooting tip Deleting administered subscribers and messaging engines.
To remove a messaging engine from a bus, complete the following steps: