While infotainment account unbinding stays open, nothing ships. The change review has to examine the original account, the vehicle data, and the new owner's activation again; one line in the change request will not suffice. If the original user can still gain access after the vehicle is resold, base the responsibility split on the contract milestones and the handover evidence rather than deciding up front. For the closure archive, use this cross-border vehicle purchasing note to check the records on both sides. Once archived, the account handover sheet should be look-up-able by order number or VIN for continued after-sales use.