(b) Continuing priority over lien creditor: perfection requirements not satisfied. Except as otherwise provided in section 9-705, if, immediately before this article takes effect, a security interest is enforceable and would have priority over the rights of a person that becomes a lien creditor at that time, but the applicable requirements for enforceability or perfection under this article are not satisfied when this article takes effect, the security interest:

1. (1) Is a perfected security interest for two years after this article takes effect;
2. (2) Remains enforceable thereafter only if the security interest becomes enforceable under section 9-203 before the second year expires; and
3. (3) Remains perfected thereafter only if the applicable requirements for perfection under this article are satisfied before the second year expires.