Rule 5:5-8. Previous File or Record

(a) Previous Action Within State In every family action where it appears by a pleading that there has been a previous family action in this State between the parties, any party or the court shall request the clerk of the court in which it was instituted to send to the clerk of the county in which the pending action is to be tried the complete file in the previous action or a certified copy thereof. At the conclusion of the action such file shall be returned.

(b) Previous Action Outside State If it appears that the previous action was in a foreign jurisdiction, the party whose pleading refers thereto, or the moving party if the action is uncontested, shall produce at trial so much of the record in said action as is necessary to enable the court to determine the effect, if any, of the previous action upon the issue before it.