Being an irrevocable trust once meant the trust was governed by an unamendable and irrevocable trust agreement. Changing an irrevocable trust was a contradiction in terms. It was often impossible (short of a court order) to amend a trust agreement designed to be unamendable. Under current Illinois law, that is no longer the case; irrevocable does not mean what it used to mean. Today, Illinois has at least four ways to change an irrevocable trust without going to court.Decanting: The Illinois decanting statute (760 …