https://issues.apache.org/jira/browse/AMQ-4563 Updated the test case some more, shows that its a problem with the MessageId handling when we receive Messages from the AMQP JMS client, when we use our own JMS client to send the the IDs are correct and we can properly ack them
activemq/trunk/activemq-amqp/src/main/java/org/apache/activemq/transport/amqp/AmqpProtocolConverter.java