A durable energy of profession is usually current during a person’s lifetime. It is used to give authorised management to someone else, to lift out actions on interest of a chairman signing a document. It expires on that person’s death.
At that point, a will becomes current and indicates who succeeds to a defunct person’s assets. Prior to a person’s death, a will has no authorised effect.
So a dual authorised papers are jointly exclusive: a energy of profession during life, a will following death.
Article source: http://medicaidsecretsforum.com/showthread.php?tid=493