(46)Member States should in any case ensure that adequate treatment is given in their national law to matters of particular importance for class formation purposes, such as claims from connected parties, and that their national law contains rules that deal with contingent claims and contested claims. Member States should be allowed to regulate how contested claims are to be handled for the purposes of allocating voting rights. The judicial or administrative authority should examine class formation, including the selection of creditors affected by the plan, when a restructuring plan is submitted for confirmation. However, Member States should be able to provide that such authority can also examine class formation at an earlier stage should the proposer of the plan seek validation or guidance in advance.