Full text
If variation proceedings between the same former spouses and in respect of the same matter are pending in two courts that would otherwise have jurisdiction under subsection (1) and were commenced on different days, and the proceeding that was commenced first is not discontinued, the court in which a variation proceeding was commenced first has exclusive jurisdiction to hear and determine any variation proceeding then pending between the former spouses in respect of that matter and the second variation proceeding is deemed to be discontinued.