After Node comes up and HA is disabled, all nodes became slaves

IN scaled out setup, (4 nodes) with HA enabled.

Master Node2 got powered off. Node4 became master after election.

Steps:
Power on Node2, and disable HA

Node1 Node2 was slave to Node4
Node3 Node4 was slave to Node2

Node4 was no more master of the pool.

content of /etc/xensource/pool.conf in :
Node1 :
slave:Node4

Node2:
slave:Node4

Node3:
slave:Node2

Node4:
slave:Node2