Section 523. Saving clause

1.  Any  urban  renewal program commenced or
  undertaken prior to the effective date of this  article,  in  accordance
  with  and  pursuant  to,  any provision of the general municipal law, or
  other law in force immediately prior  to  the  effective  date  of  this
  article,  shall in no manner be impaired or affected by the enactment of
  this article or the repeal of the applicable  sections  of  the  general
  municipal  law.  As  to  such  urban  renewal  programs  so commenced or
  undertaken, the provisions of any  such  law  may  be  deemed  continued
  thereunder  until  the  completion  of such program or programs. Nothing
  herein contained, however,  shall  prevent  a  municipality,  having  so
  commenced  or undertaken an urban renewal program prior to the effective
  date of this article, from  exercising  any  of  the  rights  or  powers
  granted  in  this  article  in  conjunction  with or substitution of the
  rights  and  powers  of  such  municipality  under  any  law  in   force
  immediately  prior  to  the  effective  date  of this article, until the
  completion of such program.
    2. Any provision in any law, rule, regulation, resolution, contract or
  other document relating to any right, power or duty of the state or of a
  municipality and which applied at the time  the  state  or  municipality
  exercised  such  power or right or performed such duty shall continue to
  apply notwithstanding any provision to the contrary of this article.
    3. An act of the legislature of the year  nineteen  hundred  sixty-one
  which  in  form  amends  or  repeals  or purports to amend or repeal any
  provision  or  provisions  of  section   seventy-two-k,   seventy-two-l,
  seventy-two-m,  seventy-two-n, or seventy-two-o of the general municipal
  law as in force at the time this act shall take effect shall  be  deemed
  and  construed  as  an  amendment  or repeal, as the case may be, of the
  corresponding provision or  provisions  of  such  sections  or  law,  as
  contained in this article.
    4.  An  act of the legislature of the year nineteen hundred sixty-one,
  which adds or purports to  add  a  new  section,  subdivision  or  other
  provision    of    law   to   sections   seventy-two-k,   seventy-two-l,
  seventy-two-m, seventy-two-n or seventy-two-o of the  general  municipal
  law  as  in force at the time this act shall take effect shall be deemed
  and construed as having been added to this act and shall be  given  full
  effect  according to its context as if the same had been added expressly
  and in terms to this act and shall be deemed and construed to have  been
  inserted  in  this  act  in the appropriate position in regard to and as
  modifying the effect of the corresponding  provision  or  provisions  of
  this article.
    5.  Reference  in  any  general, special or local law, county, city or
  village  charter  or  other  special  form  of  government,   ordinance,
  resolution,   rule,  regulation  or  document  or  in  any  act  of  the
  legislature  of  the  year  nineteen  hundred  sixty-one   to   sections
  seventy-two-k,    seventy-two-l,    seventy-two-m,    seventy-two-n   or
  seventy-two-o of the general municipal law as in force at the time  this
  act  shall  take  effect  shall  be deemed and construed to refer to the
  corresponding provision of this article and shall be given  full  effect
  according  to  its  terms  as  thereof  specifically  referring  to such
  corresponding section or other provision of this article.