N.C. Gen. Stat. § 43-35: References and cross references entered on register.

In all cases the register of deeds shall place upon the consolidated real property records and upon the certificate of title of such registered estate therein, references and cross references to the new certificates issued as above provided, in accordance with the provisions of this Article, and the new certificates issued shall fully refer by number and by name of the holder to the canceled certificate in place of which they are issued. (1919, c. 82, s. 4; C.S., s. 2409; 2000-140, s. 42(d).)