(a) remains an enforceable security interest for one year after Revised Article 9 takes effect;
(b) remains enforceable thereafter if the security interest becomes enforceable under Section 9--203 when Revised Article 9 takes effect or within one year thereafter; and
(c) becomes perfected:
(1) without further action, when Revised Article 9 takes effect if the applicable requirements for perfection under Revised Article 9 are satisfied before or at that time; or
(2) when the applicable requirements for perfection are satisfied if the requirements are satisfied after that time.