N.C. Gen. Stat. § 45-5
In all actions which were brought or prosecuted prior to the fourth day of March, 1905, for the foreclosure of any mortgage or deed in trust by any executor or administrator of any deceased mortgagee or trustee where the heirs of the mortgagee were duly made parties and regular and orderly decrees of foreclosure entered by the court and sale had by a commissioner appointed by the court for that purpose and deed made after confirmation, the title so conveyed to purchaser at such judicial sale shall be deemed and held to be vested in such purchaser, whether the heir of such deceased mortgagee or trustee was a party to such foreclosure proceeding or not, and such heir of any deceased mortgagee is estopped to bring or prosecute any further action against such purchaser for the recovery of such property or foreclosure of such mortgage or deed in trust.
N.C. Gen. Stat. § 45-5