(a)
A petition may be filed under this article regardless of when the proposed conservatee became missing or how long the proposed conservatee has been missing.
(b)
If a trustee was appointed pursuant to former Section 262, repealed by Chapter 201 of the Statutes of 1983, the provisions of former Sections 260 to 272, inclusive, repealed by Chapter 201 of the Statutes of 1983, continue to apply to the case after December 31, 1983, unless, upon a petition filed under this article after December 31, 1983, the trustee is replaced by a conservator.