3.—(1) Section 28A (application for variation of usual rules for calculating maintenance) shall be modified by the substitution in subsection (1)—
(a)for the words “Where an application for a maintenance calculation is made under section 4 or 7, or treated as made under section 6” by the words “Where a maintenance calculation other than an interim maintenance decision is in force”; and
(b)for the words “(in the case of an application under” by the words “(where the maintenance calculation was made following an application under”.
(2) Subsection (3) shall be omitted.