How do I get my Rock Band content working on my new WiiU?

Nintendo Customer Support has an excellent walk-through on how to transfer your Wii content to your new WiiU. You can find it here:

http://www.nintendo.com/consumer/systems/wiiu/en_na/system_system_transfer.jsp

Once you've transferred your save game file, you can then re-download any of your Legacy Rock Band DLC.

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