Sections 282.241 to 282.324 shall not apply to any lands which have been classified by the county board as conservation land or to lands within the game preserve established by section 84A.01, or conservation areas established by section 84A.20, or by section 84A.31, which included in the sum for which said lands were forfeited any ditch assessments, or to any lands sold to a governmental subdivision or released from trust upon application of a state agency, or devoted to and accepted for conservation or other purposes in behalf of the state, free from trust under section 282.01.