Section 409.709 - Priority(1) LAW GOVERNING PRIORITY. 2001 Wisconsin Act 10 determines the priority of conflicting claims to collateral. However, if the relative priorities of the claims were established before July 1, 2001, ch. 409, 1999 stats., determines priority.(2) PRIORITY IF SECURITY INTEREST BECOMES ENFORCEABLE UNDER S. 409.203. For purposes of s. 409.322(1), the priority of a security interest that becomes enforceable under s. 409.203 dates from July 1, 2001, if the security interest is perfected under 2001 Wisconsin Act 10 by the filing of a financing statement before July 1, 2001, which would not have been effective to perfect the security interest under ch. 409, 1999 stats. This subsection does not apply to conflicting security interests each of which is perfected by the filing of such a financing statement.