Most divorces where parties have accumulated assets will conclude with an agreement detailing the division of property.
Agreements can be contracts made between people to agree how to divide and/or transfer property, or to “ringfence” assets. Sometimes they can provide for future changes – typically including the breakdown of a relationship.
Not all agreements will last forever. It depends how they are drawn up, and what for. If there are provisions in an agreement to do with children, particularly to do with the children’s living and contact arrangements or money for their maintenance, they may later be varied, whether voluntarily by agreement, or by orders made by a court, or cease to have effect on the children reaching a certain age.