Hi all, here I have two questions need to help. Now I'm applying for the AOS, unfortunately, my husband lost the I-797, Approval notice for I-129F petition(NOA2), so what I should do? I remember the Number inside, does that work if I tell INS? the next question is we got the ADDIDAVIT OF Support before, but now seemed changed to be a new 864 form, so do we must use the new one? Thank you very much!