You can send a motion to reopen or for reconsideration to USCIS along with proof that the documents were submitted or delivered on time, such as a certified mail receipt or a return receipt. If you believe USCIS was at fault for losing or misplacing the documents, you can also make a request along with your motion that the filing fee for the motion be refunded or returned to you. Otherwise, you can also submit a new I-485 application and pay the $1,070 fee again. You do not need to resubmit a new I-130 petition; just submit a copy of the receipt for the petition with the new application.
Answered on Oct 21st, 2013 at 9:49 AM