Appellate Division of the Supreme Court of the State of New York December 1, 2009 (Chieco v. Finn)

In determining whether to modify a custody arrangement to which the parties voluntarily agreed, the principal issue before the court is whether a change in circumstances warrants a modification in the best interests of the child (see Matter of Awan v Awan, 63 AD3d 733, 734 [2009]; Matter of Lopez v Infante, 55 AD3d 837, 838 [2008]; Matter of Penn v Penn, 41 AD3d 724, 724-725 [2007]).