For excluded servers, the menu options Start, Stop, and Synchronize are dimmed. When you include a query server again, the Synchronize Query Server wizard opens. After you synchronize the server, all menu options are restored.
If the server is included, the menu option is exclude, and vice versa. Include/exclude does not apply to the write server.
Excluded servers are not updated during synchronize or replicate operations, and the write server will not track their table versions. If you exclude a server instead of deleting it, you can preserve its configuration.