I think this may be the first time you've stated that the reason Extra Credit has been redoing episodes is that they were lost. Well, I have a folder of almost every episode Extra Credit has ever done, including the really old ones. So if you want those lost episodes back I could throw together a torrent or something to make sure people can still listen to them. But, only if posting such a thing is ok to do so.
PS. Before anyone asks, yes I have been very confused as to why they've been redoing all these episodes all these months.