I checked into this when I got some of the Rutherford CDs on ebay in 2006. Whether they know it or not the CDs then had EEBO files; and they were altered to try to disguise that fact. I contacted Proquest (owner of EEBO) at the time and never heard back. If they don't care it's hard to insist on any course; but asking is a good idea if there are concerns (and having looked at them then, I had concerns).