RSA 458-A:28: Simultaneous Proceedings.

If a proceeding for enforcement under this subdivision is commenced in a court of this state and the court determines that a proceeding to modify the determination is pending in a court of another state having jurisdiction to modify the determination under RSA 458-A:12 through RSA 458-A:21, the enforcing court shall immediately communicate with the modifying court. The proceeding for enforcement continues unless the enforcing court, after consultation with the modifying court, stays or dismisses the proceeding.