(2) If a unit plan is deposited in accordance with subsection (1) while there is a mortgage or charge over the unit or units for which (under section 43(2)) the Registrar is requested to create a separate computer register, the deposit of the plan and the creation of the computer register does not affect the mortgage or charge; and if, on the creation of the separate computer register, the stratum estate in the unit or units is subject to the mortgage or charge, then the mortgage or charge must be notified on the computer register in a manner so as to preserve its priority.