Wis. Stat. § 408.603: Saving provision.

(1) If a security interest in a security is perfected on or before July 1, 1998, and the action by which the security interest was perfected would suffice to perfect a security interest under this chapter, no further action is required to continue perfection.

(2) If a security interest in a security is perfected on or before July 1, 1998, under ch. 408, 1995 stats., but the action by which the security interest was perfected would not suffice to perfect a security interest under this chapter, the security interest remains perfected for a period of 4 months after July 1, 1998, and continues perfected thereafter if appropriate action to perfect under this chapter is taken within that period. If a security interest is perfected on or before July 1, 1998, and the security interest can be perfected by filing under this chapter, a financing statement signed by the secured party instead of the debtor may be filed within that period to continue perfection or thereafter to perfect.