(1) Subject to subsection (2), if:
(a) application has been made for the provisional or final registration of a conference agreement (in this section called the original agreement ), but the original agreement has not been finally registered; and
(b) another conference agreement that varies or otherwise affects the original agreement is or has been made or arrived at;
the Registrar shall not provisionally or finally register the original agreement unless application has been made for the provisional registration of the other conference agreement.
(2) Subsection (1) does not apply if the conference agreement referred to in paragraph (1)(b) consists solely of freight rate charges.