old_contents: import Ember from 'ember';
  import ResetScrollMixin from '../mixins/reset-scroll';
  import Analytics from '../mixins/analytics';
  
  export default Ember.Route.extend(Analytics, ResetScrollMixin, {
  });
  
new_contents: import Ember from 'ember';
  import ResetScrollMixin from '../mixins/reset-scroll';
  import Analytics from '../mixins/analytics';
  
  export default Ember.Route.extend(Analytics, ResetScrollMixin, {
      init() {
          this._super(...arguments);
          if (window.location.pathname.split('/')[2] && window.location.pathname.split('/')[2].length == 5) {
              window.location = window.location.origin + '/' + window.location.pathname.split('/')[2] + '/';
          }
      }
  });
  
subject: add rerouting to not-found