Section 301.3. Applicability of article to actions and matters occurring before and after effective date

1. The provisions of this article apply
  exclusively to:
    (a) all juvenile delinquency actions and proceedings commenced upon or
  after the effective date thereof and all appeals and other post-judgment
  proceedings relating or attaching thereto; and
    (b) all matters of juvenile delinquency procedure prescribed  in  this
  article which do not constitute a part of any particular action or case,
  occurring upon or after such effective date.
    2. The provisions of this article apply to:
    (a)  all  juvenile delinquency actions and proceedings commenced prior
  to the effective date thereof but still pending on such date; and
    (b) all appeals and other post-judgment proceedings commenced upon  or
  after such effective date which relate or attach to juvenile delinquency
  actions  and  proceedings commenced or concluded prior to such effective
  date provided that, if application of such provisions in any  particular
  case  would  not  be feasible or would work injustice, the provisions of
  article seven pertaining to juvenile delinquency actions apply  thereto,
  as  such  article  seven read immediately prior to the effective date of
  this article.
    3. The provisions of this article do not impair or render  ineffectual
  any  proceedings  or  procedural  matters  which  occurred  prior to the
  effective date thereof.