Welcome to Just Answer. I am here to help you resolve your tax and finance concerns. Please feel free to ask anytime you need extra help.
Since the IRS has no record of the return being submitted you can feel free to mail it in. You will not be penalized for the late filing because you are due a refund. You should change the address on the return to your new address. Do this by putting one line through the old address and writing in the new address. It will take longer than 2 weeks to send you a refund. If you request direct deposit of the refund be sure to include the bank information on the return (lower portion of page 2) and keep the account open until you see the refund has been deposited.