NOTE
When migrating a TTIG using the command line tool you need to make sure the destination gateway ID is not in use yet. If you try to migrate and get the error ‘no rights for gateway’ you need to use a different gateway ID as the one you tried is already in use.
Also, the EUI should not be in use in V3 already. That should of course not be the case unless you manually added the gateway previously. In that case, delete the gateway and use the command line tool to claim your TTIG. Make sure to use a unique gateway ID (not the ID of the gateway you just deleted, that ID can not be reused.)