Upon receipt of a certificate of the veterans administration or such other agency of the United States, as provided in N.H. Rev. Stat. § 116:1, the superintendent of the institution may cause the transfer of such person to the veterans administration or other agency of the United States for care or treatment. Upon effecting any such transfer, the committing court or other committing authority shall be notified thereof by the transferring agency. No person shall be transferred to the veterans administration or other agency of the United States if he be confined pursuant to conviction of any felony or misdemeanor or if he has been acquitted of the charge solely on the ground of insanity, unless prior to transfer the court or other authority originally committing such person shall enter an order for such transfer after appropriate motion and hearing.