Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning entity instance

      public void save(ActionEvent event) {  
           dao = new InboxFinanceiroDao<Inbox>(HibernateUtil.getSession(),Inbox.class);  
           desativarTab = false;  
           try {  
                dao.save(inbox);  
                dao.refresh(inbox); // Adicione essa linha após persistir o objeto.
           } catch (Exception e) {  
                
           }  
      }