8老师，
我们收到绿卡面试通知了，准备原件时，发现找不到儿子第一年录取时那张I-20原件了，想问一下我们需要提供第一张I-20原件吗？他前几个月，因为正式确定了major, 刚拿到一张新的I-20，是不是和I-94一样，只要有最近的就可以了？
-Technically he needs to provide all the original I-20s since his last entry. But if he lost the old one, he may just provide the photocopy of it, and explain it to the IO. No big deal because the IO can find his record from SEVIS system, anyway.
