A transfer or mortgage in the ordinary form by a tenant in tail under this Act having power to create an estate in fee simple shall create that estate in favour of a transferee, mortgagee, or transferee under the power of sale in the mortgage, and a transferee from a tenant in tail, or under a mortgage from a tenant in tail or a mortgagee after foreclosure shall be entitled to be registered as proprietor of the larger estate which the tenant in tail is empowered to confer, but a mortgage under this Act, if discharged, shall not bar the entail.