Undeploy of jar from EAR on cluster does not remove from
secondary node

Hi,
  I am trying to do an partial re-deployment of EAR with an external JAR using
MBean API on a cluster with 2 nodes. After deployment i see jar file going into
the <server>/stage/<appname>/APP-INF/lib folder on both the nodes.
Now when i try to perform an undeploy of same jar from the EAR on cluster, i see
that the file archive still remains on the secondary node but gets removes from
base node stage directory. Is this a bug in weblogic server?

Thanks