Understanding MSMQ Transport

I'm using Neuron ESB 2.6.233.

I see that for each Topic, Publisher, and Subscriber ESB creates or checks availability of following queues:


_NonTransactional

_NonTransactional

_NonTransactional

I did not find description of that in docs, so I played with settings and found that:

Publish->Transactional property on topic determine which Topic and Subscriber queue will be used - if value of this property is False, then it will queue with _NonTransactional suffix, if the value is True - then without _NonTransactional suffix.

The property Receive->Direct works exactly as described - if it set to true then ESB sends messages directly to Subscriber queue, bypassing Topic queue completely.

What I do not understand or unable make to work are:

1) When publisher queue(s) are using? I do not find any combination of properties which forces ESB to publish messages to publisher queue first, and then move them further.

2) It is possible to change queue name for Publisher and Subscriber using Deployment->Deployment Groups->->Queues. How to change a name of Topic queue?

3) Why Neuron creates all queues, not only necessary (I specified particular mode for the Topic. I'm ready to cleanup and re-create queues if I will decide to change mode later)

4) The Publisher and Subscriber (i.e. Send + Receive Direction) for MSMQ Topic seems have a bug. I.e. the situation when you have two instances of same Publisher and Subscriber, first instance sends message, second instance receives message, is not working. Looks like ESB does not understand that Subscriber is available and produces warnings in Event Log (if property General->Log No Recipients on Topic is enabled), similar to following:

Event Info: The client PubSub1 (76d2a83e-2985-402d-a2f1-0d2331bc3afc) published Message c52fe335-ac33-4b8e-9c8a-93ea069ab105 to topic 'Test2' but there were no eligible subscribers to receive the message.

Method: Distribute