6.—(1) Where civil partners who marry in accordance with the 1977 Act are in a qualifying civil partnership within the meaning of section 5(6)(b) of that Act, section 11(2)(b) of the 2014 Act has effect subject to paragraph (2).
(2) If the qualifying civil partnership was registered (under the relevant law) as having been entered into before 5th December 2005, the civil partners are to be treated as having been married to each other since 5th December 2005.
(3) In paragraph (2) “the relevant law” means the law of the country or territory where the relationship is registered (including its rules of private international law).