some_route.js

// In some route...
actions: {
  deleteModel: function (model) {
    model.deleteRecord();
    model.save().then(
      function () {
        console.log("I succeeded... but this isn't the point of this gist...");
      },
      
      function () {
        // Right here my model isDirty=true, isDeleted=true
        model.rollback(); // doesn't reset isDirty of isDeleted
      }
    );
  }
}