N.C. Gen. Stat. § 47-88
In all cases where the acknowledgment, privy examination of a married woman, or other proof of the execution of any deed, mortgage or other instrument, authorized to be registered, has been taken before a commissioner in another state appointed by the probate judge of any county of this State, under the provisions of section 20 of Chapter 35 of Battle's Revisal, during the time said Chapter remained in force and effect, and such commissioner has certified to such acknowledgment, privy examination or other proof, and has returned such deed, mortgage or other instrument to said probate judge, with his certificate endorsed thereon, and such deed, mortgage or other instrument, together with such certificate, has been registered, without any adjudication or order of registration by such probate judge, the probate and registration of any and every such deed shall be, and hereby are, to all intents and purposes validated.
N.C. Gen. Stat. § 47-88