19.—In deciding whether—

(a) to include in an order under section 7 a provision requiring the making of periodical payments for the benefit of a dependent member of the family,

(b) to make an order under paragraph (a)(ii), (b)(ii) or (c)(ii) of section 8(1),

(c) to make an order under section 18 varying, discharging or suspending a provision referred to in paragraph (a) or an order referred to in paragraph (b),

the court shall not have regard to conduct by the spouse or spouses concerned of the kind specified in subsection (2)(i) of section 16 or desertion referred to in subsection (3) of that section.