Did Blawgletter say painless? We meant less painful. Sorry. It still will hurt.
Partly because employees of business litigants can copy electronic files an almost infinite number of times and put them on many media (servers, local disk drives, floppy disks, USB drives, CDs, DVDs, PDAs, and so forth) in lots of physical locations, only some at the workplace. The same document could show up in many nooks or just one cranny. Like the hero Ash in Pokemon, diligent trial counsel has gotta catch them all.
Now comes news that computer network designers have started figuring out how to keep all electronic documents in one, accessible location and to prevent copying to other media and places. That should really help. Details as they become available.