In order to use United SWUs on Continental, it is important to take the following steps and remember that the terms and conditions of the United SWU requiring a W and higher fare for international travel must be followed for Continental flights as well. First, one has to have a Continental OnePass account with a name that matches exactly the name of your Mileage Plus account. So a Mileage Plus account with the name John Smith and an OnePass account with the name John Smith will work, but an OnePass account named John R. Smith will not work with a Mileage Plus account named John Smith. Second, when booking flights, keep the metal the same for a direction of travel, if upgrades are not available to be confirmed on some of the segments. If you can confirm the upgrade at the time of booking on a combination of United and Continental flights in one direction, this is fine; however, it is not possible to waitlist a SWU on a combination of United and Continental flights simultaneously. So EWR-ORD on Continental connecting to United ORD-NRT is fine only if you can confirm both the upgrades at the time of booking, but you cannot waitlist one of these flights if there is upgrade space available on only one segment. It would therefore be better to fly EWR-IAH, and IAH-NRT on Continental if one or both of the segments is going to be waitlisted. Third, once the ticket is booked, the United SWU needs to be transferred to your OnePass account to apply it on Continental flights. Call United reservations and explain to the agent you wish to apply the SWU to the Continental flights. The United agent will then transfer your call to the integration desk which will process the upgrade. You will have to provide your OnePass account number and Pin for the SWU to be transferred and processed. From here, the integration desk agent will handle the upgrade and ensure that everything is in order.