(b) Domestic partnerships created under any local domestic partnership ordinance or law before July 1, 2000, shall remain valid.
On and after July 1, 2000, domestic partnerships previously established under a local ordinance or law shall be governed by this division and the rights and duties of the partners shall be those set out in this division, except as provided in subdivision (c), provided a Declaration of Domestic Partnership is filed by the domestic partners under Section 298.5.