(a) [Pre-effective-date transactions or liens.]
Except as otherwise provided in this part, this [Act] applies to a transaction or lien within its scope, even if the transaction or lien was entered into or created before this [Act] takes effect..
Except as otherwise provided in subsection (c) and Sections 9-703 through 9-709:
(1) transactions and liens that were not governed by [former Article 9], were validly entered into or created before this [Act] takes effect, and would be subject to this [Act] if they had been entered into or created after this [Act] takes effect, and the rights, duties, and interests flowing from those transactions and liens remain valid after this [Act] takes effect; and
(2) the transactions and liens may be terminated, completed, consummated, and enforced as required or permitted by this [Act] or by the law that otherwise would apply if this [Act] had not taken effect.
(c) [Pre-effective-date proceedings.]
This [Act] does not affect an action, case, or proceeding commenced before this [Act] takes effect.