mqtt subscription information not removed from persistence store

[Netlancer]

Hi,

 I am using activemq-5.10-SNAPSHOT codebase for mqtt. I tried the 
following scenario

client c1 ( clientid1) connects, subscribes to topic A , unsubscribes 
topic A and disconnects.
client c1 ( clientid1) connects back again, the callbacks for 
addConsumer/removeConsumer gets called for topic A.

The restoreDurableSubs in MQTTProtocolConverter does a subscribe for the 
topic even though client c1 has unsubscribed.

the persistence store configured is leveldb.  I have not tried with kahadb.

The behavior is same for paho client and mqtt-client.

Please, let me know if this is a defect

Thanks,
nl