I'm currently on OPT STEM extension and I am preparing documents for I-485 (EB2-NIW). Is it necessary to include all I-797 approval notices from my original OPT and STEM extension? The problem is I can't seem to find the I-797 approval notice for my STEM extension. I don't even remember if I received it. I got the EAD card in April and didn't think much of the I-797. I do have both EAD's and the I-797 for the original OPT. Would copies of the EAD's be enough or would I get in trouble for the missing I-797? Thanks for your help.