Notwithstanding the provisions of subdivision (b) of Section 51243 of the Government Code, upon the annexation by a city of any land within the marsh that is under contract with the county, the city shall succeed to all rights, duties, and powers of the county under such contract and the contract shall remain effective for all purposes even if (1)the land being annexed was within one mile of such city at the time that the contract was entered into; (2)the city had filed, and the local agency formation commission had approved, a protest to the contract pursuant to Section 51234.5 of the Government Code; and (3)the city had stated its intent not to succeed in its resolution of intention to annex.