[PS3] How do I load backed up save data?

[IniX]

I recently formatted my PS3, and I can see my Save Data in the Saved Data Utility, but when I check Rock Band 2, there's no band, characters, or any of my DLC available.

How do I load my backed up data into Rock Band 2?

[keneke]

Did you do a full system back up and then restore from the backup? If not, I'm afraid you've lost your band, characters etc.

The RB save files are all protected and can't be copied individually.