| PASS Unregister then register resolves to a new value | |
| PASS Unregister then register resolves to the original value if the registration is in use. | |
| PASS Reloading the last controlled iframe after unregistration should ensure the deletion of the registration | |
| PASS Unregister then register does not affect existing controllee | |
| PASS Unregister then register resurrects the registration | |