Maybe others know if there is a possibility for this. I don't know the reason for this, but for me that used to be for audit / compliance / legal reasons. What I normally did in that case was restore the data (only the files obviously) and stored it away to some removable media (In the good old days tape, then iomega removable devices ...
Is that a possibility for you?
P.S. Sorry, forgot to mention. And that media with that data on it obviously went straight to the vault at work.