Repealing re-enacted law

The Parliaments Normally may re-enacts rules, while the rules are already valid and then when it repeals one of those rules, the question may arise that whether the previous rules with the same content are also repealed? A positive response is approvable by logic of norms and rules of law. In this regard, the Concept of law may not be recognized by its Subjects, sections and Sub-Sections, but with the main important functions of the law.Of course Legislator has an end by issuing an order. And by repealing an existed rule; he tries to abrogate his previous purport. Therefore postulating the validity of abrogated rule or amending the forms of the rules may amend him to concede the new purports and new issues in the process of Law-making.