We currently have a customer : sub customer hierarchy in our system for a lot of our clients, only to accommodate instances of separate billing emails for annually or quarterly recurring items. We are looking at consolidating back to a single customer model, but are not sure where to turn with the recurring billing. It's pretty easy to send a single sales order to a different email or billing address than the one on the customer record, since you can change it manually, and that even carries through to the invoice. When you run contract renewals, however, the renewal sales