@sstok you mean [here](https://github.com/rollerworks/RollerworksMultiUserBundle/blob/232b213565aa98e5595195ea18712f86689373a3/src/Rollerworks/Bundle/MultiUserBundle/DependencyInjection/Factory/UserServicesFactory.php#L355)?
The [ID of the service](https://github.com/ged15/FOSUserBundle/blob/master/Resources/config/security.xml#L33) is the same so, unless you are using inheritance (which you shouldn't do anyway), BC should be intact ;)