No action is required. OnePass members who do not already have a Mileage Plus account will automatically be enrolled in the new program. For members who have accounts in both programs, you are encouraged to link your accounts now, and then all other accounts will be matched up as best as possible.
You can still link your accounts ahead of time. If you have accounts in both programs and want to link them yourself before the first quarter of 2012, you can do so at united.com/linkmyaccounts or continental.com/linkmyaccounts.
Your miles and status are safe. Rest assured that all reward miles, elite qualification credit, and lifetime status (if applicable) will be preserved OnePass and Mileage Plus are transitioned to a single frequent flier loyalty program in 2012. In addition, OnePass members will earn 2012 elite status based on their combined OnePass and Mileage Plus elite qualifying activity in 2011.