When a boundary between counties is established by legislation or under G.S. 153A-18, the Executive Director shall direct the county boards of elections involved to administratively change the voter registration of any voter whose county of residence is altered by the establishment of the boundary. The voter shall not be required to submit a new application to register, and the provisions of G.S. 163-57 shall apply to the determination of residency. The Executive Director shall prescribe a method of notifying the voter of the change of county registration, the correct precinct, and other relevant information.
N.C. Gen. Stat. § 163-82.15A