Any police pension system created under chapter 86 for the benefit of a police force established under sections 84.010 to 84.340 shall continue to be governed by chapter 86, and shall apply to any police force established under section 84.343 to 84.346. Other than any provision that makes chapter 86 applicable to a municipal police force established under section 84.343 to 84.346, nothing in sections 84.343 to 84.346 shall be construed as limiting or changing the rights or benefits provided under chapter 86.