N.H. Rev. Stat. Ann. § 383:25

Each decision or act of the board of trust company incorporation shall maintain the same force and effect as when such decision was issued or act was taken, except to the extent otherwise provided under this title. Any charter granted or amended by the board of trust company incorporation, with all rights, obligations, and interests vested or accrued thereunder shall remain in effect according to its terms, and shall continue to be subject to and governed by the provisions of this title.