How do I export Track Packs on Xbox 360 for Rock Band 3?

You can export Track Packs from your copy of Rock Band 3 to export them in Rock Band 4.
Note: Keep in mind that you can only export using a brand new copy of a Track Pack.

1. Go to Settings.
2. Select Account, then choose Redeem Code.
3. Enter the code included with your Track Pack.
4. Follow the on-screen instructions to complete redemption.

If the code is still valid and supported, the content will be added to your account. If the code does not work, the export is no longer available.
Note: These steps only apply to Xbox 360 and may not reflect current Xbox interfaces on newer consoles.