(a) This chapter, as revised, determines the priority of conflicting claims to collateral. However, if the relative priorities of the claims were established before the revision takes effect, this chapter, as it existed before the effective date of the revision, determines priority.
(b) For purposes of Section 9.322(a), as revised, the priority of a security interest that becomes enforceable under Section 9.203, as revised, dates from the time the revision takes effect if the security interest is perfected under this chapter, as revised, by the filing of a financing statement before the revision takes effect that would not have been effective to perfect the security interest under this chapter, as it existed immediately before the effective date of the revision. This subsection does not apply to conflicting security interests each of which is perfected by the filing of such a financing statement.