In all cases where any deed, mortgage or other instrument has heretofore been acknowledged or probated in accordance with the provisions of G.S. 47-87 and 47-88, and such deed, mortgage or other instrument has been registered, without any order of registration by the probate judge or clerk of the superior court appearing thereon, the probate and registration of any and every such deed, mortgage or other instrument shall be, and hereby is, to all intents and purposes validated. (1921, c. 19, ss. 3, 4; C.S., s. 3366(d).)