Cal. Gov. Code § 23384
Except as provided by the commission, upon creation of the proposed county the territory located within the proposed county shall be relieved of annual tax liability for outstanding indebtedness of each affected county in the year next succeeding the election on creation of the proposed county when assessments or taxes are to be levied for payment of such indebtedness.
Territory remaining in the affected county or counties upon the creation of the proposed county shall be relieved of annual tax liability for any outstanding indebtedness of such affected county or counties which the commission determines is to be assumed by the proposed county. Such relief shall become effective in the year next succeeding the year in which the election on creation of the proposed county is held when assessments or taxes are to be levied for payment of such indebtedness.
Nothing in this section shall be construed as in any way limiting the power of a bondholder to enforce his contractual rights; and nothing in this section shall affect the ultimate liability of territory of the affected county or counties, or of the proposed county for bonded indebtedness of the affected county or counties, or of the proposed county for bonded indebtedness of the affected county or counties in case of default.
Ca. Gov. Code § 23384