law: Juvenile Justice (Care and Protection of Children) Act, 2000 
  64. Juvenile in
  
  conflict with law undergoing sentence at commencement of this Act.- 
  In any area in which this Act is brought into
  
  force, the State Government shall direct that a juvenile in conflict with law
  
  who is undergoing any sentence of imprisonment at the commencement of this Act,
  
  shall, in lieu of undergoing such sentence, be sent to a special home or be
  
  kept in fit institution in such manner as the State Government thinks fit for
  
  the remainder of the period of the sentence; and the provisions of this Act
  
  shall apply to the juvenile as if he had been ordered by the Board to be sent
  
  to such special home or institution or, as the case may be, ordered to be kept
  
  under protective care under sub-section (2) of section 16 of this Act.
  Provided that the State Government, or as the
  
  case may be the board, may, for any adequate and special reason to be recorded
  
  in writing, review the case of a juvenile in conflict with law undergoing a
  
  sentence of imprisonment, who has ceased to be so on or before the commencement
  
  of this act , and pass appropriate order in the interest of such juvenile.
  Explanation :– In all cases where a juvenile
  
  in conflict with law is undergoing a sentence of imprisonment at any stage on
  
  the date of commencement of this act, his case including the issue of
  
  juvenility, shall be deemed to be decided in terms of clause (l) of section 2
  
  and other provisions contained in this act and the rules made their under,
  
  irrespective of the fact that he ceases to be a juvenile on or before such date
  
  and accordingly he shall be sent to the special home or a fit institution, as
  
  the case may be, for the remainder of the period of the sentence but such
  
  sentence shall not in any case exceed the maximum period provided in section 15
  
  of this act.
  Modified vide Juvenile Justice (Care and
  
  Protection of Children) Amendment Act, 2006, section 25