N.C. Gen. Stat. § 47-87

In all cases where, prior to the second day of March, 1895, 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, executed by husband and wife, has been taken as to the husband and wife in different states and by different officers having power to take acknowledgments, any and every such acknowledgment, privy examination of a married woman, or other proof of execution, and the probate of any and every such deed, mortgage or other instrument shall be and hereby is, to all intents and purposes validated.