destinationPerDurableSubscriber on a individualDeadLetterStrategy when all subscribers fail?

Hi,

I'm trying to setup individual DLQ's for each of the subscribers to a topic.
I tried setting this up using the destinationPerDurableSubscriber="true"
for the individualDeadLetterStrategy as follows:

<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">" >
<!-- The constantPendingMessageLimitStrategy is used to
prevent
slow topic consumers to block producers and affect
other consumers
by limiting the number of messages that are
retained
For more information, see:

http://activemq.apache.org/slow-consumer-handling.html

<pendingMessageLimitStrategy>
<constantPendingMessageLimitStrategy limit="1000"/>
</pendingMessageLimitStrategy>
<deadLetterStrategy>
<individualDeadLetterStrategy topicPrefix="DLQ."
destinationPerDurableSubscriber="true" />
</deadLetterStrategy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>

When testing this configuration I notice mixed results which seems pretty
random. One time a message has been put in the correct DLQ whereas the next
time it has been put in the DLQ specific to another subscriber to the same
topic.

Could I be missing something in this configuration ?
Could transactions be interfering ?

Kind regards,

Xander