Mont. Code Ann. § 42-5-203
Finality of decree -- expediency
42-5-203 . Finality of decree -- expediency. (1) For purposes of appeal, the decree of adoption is a final order when it is issued.
(2) A person may appeal from the order in the manner and form provided for appeals from a judgment in civil actions.
(3) An appeal from a decree of adoption must be heard expeditiously pursuant to the provisions of 42-2-618 .