(a) Determination of priority. Subject to subsections (b) and (c), Article 12 determines the priority of conflicting claims to Article 12 property when the priority rules of Article 9 as amended by this act do not apply.
(b) Established priorities. Subject to subsection (c), when the priority rules of Article 9 as amended by this act do not apply and the priorities of claims to Article 12 property were established before the effective date of this article, law other than Article 12 determines priority.
(c) Determination of certain priorities on adjustment date. When the priority rules of Article 9 as amended by this act do not apply, to the extent the priorities determined by this act modify the priorities established before the effective date of this act, the priorities of claims to Article 12 property established before the effective date of this act cease to apply on the adjustment date.