Not only do they remain in the computer (findable through PC recovery methods), but in government and corporate environments, the servers maintain archives, too.
I did hear that anything of a personal or top secret type info has been redacted.
So, I wouldn’t worry too much. Even if nothing is there, they will just make it up like the the Dan Rather and Mapes scandal. Oh well, Palin can say she provided more jobs than Obam has. LOL