Re: queues in /HP/CM/ConfigurationServer/data/core not getting cleared
If the contents of those old queues is not important, you can configure them to be discarded. For whatever reasons, those messages are not getting processed, you can set a maximum time till which they can remain in the queue.
The default values of DELAY and ATTEMPTS make a message remain in the queue for too long ( guess 8 days) before it is discarded finally. You can try modifying them in such a way that the messages are attempted once and then immediately discarded. Set the values back to original or desired ones later.
It will still be good to know the actual reason of not clearing the old queues.