I don't think they print out the e-filed amended returns; they scan the paper ones, so everyone is working with images on a computer screen, not paper on their desk.  I think the question might relate to the requirement that for any forms and schedules that are changed, a copy of the original and the amended should be attached.  If the system won't allow attaching copies of originals, my guess is that means they are not really needed.  (Probably aren't with paper returns, either.)