(b)When the registration certificate is amended under sub-clause (i) of clause (a) in pursuance of any of the events specified in sub-section (8), such amendment shall take effect from the date such event has taken place and in all other cases falling under the said sub-clause the amendment shall take effect from the date of application. An amendment made under sub-clause (ii) of clause (a) shall take effect from the date of order for making such amendment.