If the data was cloned on-site, then we wouldn't have heard about the search warrant (there'd have been a gag order).
And as this happened yesterday, there's almost no chance that the server could have been taken to the lab, imaged, and then returned to be reconnected today.
I would bet 100 dollars that the actual target server of the raid is still sitting on a dolly in the forensics cage while a tech is waiting for someone to tell him what he's supposed to be looking for.