None of the provisions of this chapter shall be construed to apply retroactively or to prohibit importation into this state of wildlife which may be lawfully imported into the United States or lawfully taken and removed from one state to another or to prohibit entry into this state or the possession, transportation, exportation, processing, sale or offer for sale or shipment of any wildlife which has been determined to be a threatened or endangered species in this state but not in the state where originally taken if the person engaging in such activity demonstrates that such wildlife was lawfully taken and lawfully removed from such state. This section shall not be construed to permit the possession, transportation, exportation, processing, sale or offer for sale or shipment within this state of species of wildlife determined, pursuant to the endangered species act, to be an endangered or threatened species, except as permitted by N.H. Rev. Stat. § 212-A:7, II.