Earlier I noticed (in mustang)  that an attempt to kill a netezza database process using 'Kill' command results in NPs bounce.

But few days back, an attempt to kill a nzbackup process was successful with 'kill' command (as we could not abort it with nzsession abort option) and surprisingly, It didn't cause any NPS bounce !

Is the NPs bounce event a mere coincidence or is it because  in new versions of Mustang (4.6.2 P22)  this problem is fixed ?

PS: This problem is non-existent in TF.