N.C. Gen. Stat. § 48-9-108

If a final decree of adoption is set aside, the court shall send a certified copy of the order within 10 days after it becomes final to the State Registrar if the adoptee was born in this State or to the appropriate official responsible for issuing birth certificates or their equivalent if the adoptee was not born in this State. The court shall also send a copy to the Division. If the adoptee desires to have the adoptive name shown on the original birth certificate when it is restored, the order must include this directive. Upon receipt of such an order, the State Registrar shall seal the certificate issued under this section and restore the adoptee's original certificate of birth. This sealed file may subsequently be opened only by direction of a valid court order pursuant to G.S. 48-9-105 and G.S. 48-9-106.