Section 301.3 - Applicability of article to actions and matters occurring before and after effective date1. 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.N.Y. Family Court Law § 301.3