Where any such lease as aforesaid registerable under this Act shall, . . . F1, have been recorded in the books of council and session, or in the books of any sheriff F2commissary or burgh court, the production to the keeper of the register of an extract of such lease shall be a sufficient warrant for him to record the same, and he shall thereupon duly record it, and the recording thereof shall be as valid and effectual as if the original lease had been presented to him.