Conn. Gen. Stat. § 45a-581

The provisions of sections 45a-578 to 45a-585 , inclusive, shall not abridge the right of any person to assign, convey, release, renounce or disclaim under any other statute or under common law. The enactment of said sections shall not be construed as an impairment of the validity of a partial or complete disclaimer, (1) whether or not such disclaimer was made prior to October 1, 1981, or (2) with respect to a disclaimer of an interest in joint tenancy real property, whether such disclaimer was or is made under any other statute or common law before, on or after October 1, 1997.