将.Net TransactionScope与IBM XMS一起使用

Question

通过XMS访问IBM MQ时可以使用TransactionScope吗？我有以下测试代码：

               var context =
               new InitialContext(
                   new Hashtable
                   {
                        { "XMSC_IC_URL", "XXX" },
                        { "XMSC_IC_SECURITY_AUTHENTICATION", "none" },
                   });

                var connectionFactory = (IConnectionFactory) context.Lookup("XXX");
                    connectionFactory.SetStringProperty("XMSC_WMQ_CONNECTION_MODE", "5");
                    connectionFactory.SetStringProperty("XMSC_WMQ_SSL_CIPHER_SPEC", "TRIPLE_DES_SHA_US");
                    connectionFactory.SetStringProperty("XMSC_WMQ_SSL_KEY_REPOSITORY", "XXX");

                try
                {
                    using (var scope = new TransactionScope())
                    {
                        using (var connection = connectionFactory.CreateConnection())
                        {
                            connection.Start();
                            using (var session = connection.CreateSession(true, AcknowledgeMode.SessionTransacted))
                            {
                                using (var queue = session.CreateQueue(queueName))
                                {
                                    using (var consumer = session.CreateConsumer(queue))
                                    {
                                        var message = consumer.Receive();
                                    }
                                }
                            }
                        }

                        throw new Exception();
                        scope.Complete();
                    }
                }
                catch (Exception)
                {
                }

尽管有异常，它将承诺接收（确认）消息。为什么？如果我注释所有带有作用域的行以及抛出异常的行，则消息将保留在队列中。为什么在失败的情况下使用事务范围来确认消息？