Except as otherwise provided in Code Section 19-9-64, a court of this state may not modify a child custody determination made by a court of another state unless a court of this state has jurisdiction to make an initial determination under paragraph (1) or (2) of subsection (a) of Code Section 19-9-61 and:

(1) The court of the other state determines it no longer has exclusive, continuing jurisdiction under Code Section 19-9-62 or that a court of this state would be a more convenient forum under Code Section 19-9-67; or

(2) A court of this state or a court of the other state determines that neither the child nor the child's parents or any person acting as a parent presently resides in the other state.