If you are restoring to new databases, this option will update your web app settings to use the connection strings for the ...

If you are restoring to new databases, this option will update your web app settings to use the connection strings for the new databases. This functionality will work only if, in your code, you refer to connection strings by using the name defined in the web app settings, and not directly. You should still verify that all functionality related to databases works as expected after the restore completes.