What happens to my RE220's wireless settings when it joins a OneMesh network?

When the extender connects to a TP-Link OneMesh router, it automatically joins the router's OneMesh network and copies the router's wireless settings, including network name, password, and access control settings. Devices will automatically switch between the router and extender as you move through your home for seamless roaming. Note that Access Control settings cannot be changed independently on the extender while it is part of a OneMesh network. (Page 16)