(1) Notwithstanding anything contained in section 47 a transfer of a mortgage or encumbrance or a transfer or mortgage of a lease (other than a Crown lease) or sublease, or a sublease granted by a lessee other than a Crown lessee, or by a sublessee or of variation of mortgage, shall be deemed and taken to be duly registered when a memorial thereof has been entered in the register on the folio for the land.
(2) Every memorial prepared under this section shall state the nature of the instrument to which it relates and such other particulars as the registrar-general directs, and shall be signed by the registrar-general.