(A) Orders binding the sole holder or all co-holders of a power of revocation or a presently exercisable general power of appointment, including one in the form of a power of amendment, bind other persons to the extent their interests (as objects, takers in default, or otherwise) are subject to the power.

(B) To the extent there is no conflict of interest between them or among persons represented, orders binding a guardian bind the person whose estate he or she controls; orders binding a trustee bind beneficiaries of the trust in proceedings to probate a will establishing or adding to a trust, to review the acts or accounts of a prior fiduciary and in proceedings involving creditors or other third parties; and orders binding a personal representative bind persons interested in the undistributed assets of a decedent's estate in actions or proceedings by or against the estate. If there is no conflict of interest and no guardian has been appointed, a parent may represent his or her minor child.

(C) An unborn or unascertained person who is not otherwise represented is bound by an order to the extent his or her interest is adequately represented by another party having a substantially identical interest in the proceeding.