Overrides \Drupal\Core\Entity\EntityFormController::form().
Overrides EntityFormController::submit
public function submit(array $form, array &$form_state) {
$entity = parent::submit($form, $form_state);
$entity
->setOriginalID(NULL);
$entity
->save();
// Redirect the user to the view admin form.
$uri = $entity
->uri();
$form_state['redirect'] = $uri['path'] . '/edit';
return $entity;
}