(1) If:
(a) a responsible person (the first responsible person ) for a child was to have at least regular care of the child during a care period under a determination (the first care determination ) made under section 50; and
(b) the first responsible person has had no care of the child, or has had a pattern of care that is less than regular care of the child, despite another responsible person for the child making the child available to the first responsible person; and
(c) a determination of the other responsible person's percentage of care for the child has been made under section 50; and
(d) the other responsible person notifies the Registrar or the Secretary of the matter referred to in paragraph (b) of this subsection within a period that the Registrar considers is reasonable in the circumstances;
the Registrar must revoke both determinations.
Note: The Registrar must make new determinations under section 49 or 50 to replace the revoked determinations: see paragraph 49(1)(b) or 50(1)(b).
(2) The revocation of each determination takes effect:
(a) if the first responsible person never established a pattern of care in accordance with the first care determination--at the beginning of the application day for that determination; or
(b) if the first responsible person established a pattern of care in accordance with the first care determination but later ceased the established pattern of care--at the end of the day before the day on which the person ceased the previously established pattern of care.
(3) To avoid doubt, a responsible person never establishes a pattern of care if:
(a) the responsible person could not have established the pattern of care until a particular period that occurs later in a child support period; and
(b) the responsible person does not establish that pattern during that particular period.