To the extent a power holder of a general power of appointment, other than a power to withdraw property from, revoke, or amend a trust, makes an ineffective appointment:
(1) The gift-in-default clause controls the disposition of the ineffectively appointed property.
(2) If there is no gift-in-default clause or to the extent the clause is ineffective, the ineffectively appointed property passes as follows:
a. To the power holder if the power holder is a permissible appointee and living.
b. If the power holder is an impermissible appointee or deceased, to the power holder's estate if the estate is a permissible appointee.
c. If the power holder is an impermissible appointee or deceased and if the estate is not a permissible appointee, under a reversionary interest to the donor or the donor's transferee or successor in interest.