I have a new client. They don't think they're registered for MTD yet, meaning I can still file their return on the old gateway. I have authorisation on the old gateway, and my agent services account is already linked to my old gateway.
Will adding a new client to the old gateway automatically link them to my new agent services account (a list on the agent services account might have been a good idea). If not, do I need to follow the ask a client to authorise you link to get new authorisation?
Moving forward; If I get a new client do I need to get VAT authorisation on the old gateway, or is this all done on the new agent services account? How am I supposed to know if I have authorisation without a client list?