3N.I.Where a tenancy terminated before the commencement of this Act would otherwise be a tenancy to which Part I applies, and the tenant thereof, whether a decree in ejectment or order for possession had been made against him or not, is at the commencement of this Act in occupation of the premises or part of the premises comprised in the tenancy, then for the purposes of this Act, notwithstanding such termination, the tenancy shall be deemed to continue by virtue of section 3 and the provisions of Part I shall apply accordingly.