diff --git a/rwlaunchpad/plugins/rwnsm/rift/tasklets/rwnsmtasklet/cloud.py b/rwlaunchpad/plugins/rwnsm/rift/tasklets/rwnsmtasklet/cloud.py
index 6be3761..05be1aa 100644
--- a/rwlaunchpad/plugins/rwnsm/rift/tasklets/rwnsmtasklet/cloud.py
+++ b/rwlaunchpad/plugins/rwnsm/rift/tasklets/rwnsmtasklet/cloud.py
@@ -177,22 +177,33 @@
                 self._loop,
                 callback=self.on_ro_account_change
                 )
+        self._nsr_sub = mano_dts.NsInstanceConfigSubscriber(
+                self._log,
+                self._dts,
+                self._loop,
+                self.handle_nsr)
 
         # The default plugin will be RwNsPlugin
-        self._plugin_instances = {}
         self._ro_plugin = self._create_plugin(self.DEFAULT_PLUGIN, None)
+        self.live_instances = 0
 
     @property
     def ro_plugin(self):
         return self._ro_plugin
 
-    def on_ro_account_change(self, ro_account, action):
+    def handle_nsr(self, nsr, action):
         if action == rwdts.QueryAction.CREATE:
-            self._on_ro_account_added(ro_account)
+            self.live_instances += 1
+        elif action == rwdts.QueryAction.DELETE:
+            self.live_instances -= 1
+
+    def on_ro_account_change(self, ro_account, action):
+        if action in [rwdts.QueryAction.CREATE, rwdts.QueryAction.UPDATE]:
+            self._on_ro_account_change(ro_account)
         elif action == rwdts.QueryAction.DELETE:
             self._on_ro_account_deleted(ro_account)
 
-    def _on_ro_account_added(self, ro_account):
+    def _on_ro_account_change(self, ro_account):
         self._log.debug("Got nsm plugin RO account: %s", ro_account)
         try:
             nsm_cls = self._nsm_plugins.class_by_plugin_name(
@@ -205,25 +216,24 @@
                 )
             nsm_cls = self.DEFAULT_PLUGIN
 
-        self._ro_plugin = self._create_plugin(nsm_cls, ro_account)
+        ro_plugin = self._create_plugin(nsm_cls, ro_account)
+        if self.live_instances == 0:
+            self._ro_plugin = ro_plugin
+        else:
+            raise ValueError("Unable to change the plugin when live NS instances exists!")
 
     def _on_ro_account_deleted(self, ro_account):
         self._ro_plugin = None
 
     def _create_plugin(self, nsm_cls, ro_account):
-        # Check to see if the plugin was already instantiated
-        if nsm_cls in self._plugin_instances:
-            self._log.debug("RO account nsm plugin already instantiated.  Using existing.")
-            return self._plugin_instances[nsm_cls]
 
-        # Otherwise, instantiate a new plugin using the cloud account
         self._log.debug("Instantiating new RO account using class: %s", nsm_cls)
         nsm_instance = nsm_cls(self._dts, self._log, self._loop,
                                self._records_publisher, ro_account)
 
-        self._plugin_instances[nsm_cls] = nsm_instance
         return nsm_instance
 
     @asyncio.coroutine
     def register(self):
         yield from self._ro_sub.register()
+        yield from self._nsr_sub.register()
diff --git a/rwlaunchpad/test/CMakeLists.txt b/rwlaunchpad/test/CMakeLists.txt
index bd1a51e..1c18e26 100644
--- a/rwlaunchpad/test/CMakeLists.txt
+++ b/rwlaunchpad/test/CMakeLists.txt
@@ -59,6 +59,11 @@
   ${CMAKE_CURRENT_SOURCE_DIR}/utest_rwnsm.py
   )
 
+rift_py3test(utest_ro_account
+  TEST_ARGS
+  ${CMAKE_CURRENT_SOURCE_DIR}/utest_ro_account.py
+  )
+
 rift_py3test(tosca_ut
   TEST_ARGS
   ${CMAKE_CURRENT_SOURCE_DIR}/tosca_ut.py
diff --git a/rwlaunchpad/test/utest_ro_account.py b/rwlaunchpad/test/utest_ro_account.py
old mode 100644
new mode 100755
index 6e480d4..aa485ef
--- a/rwlaunchpad/test/utest_ro_account.py
+++ b/rwlaunchpad/test/utest_ro_account.py
@@ -114,7 +114,7 @@
         mock_orch_acc = launchpadyang.ResourceOrchestrator.from_dict(
                 {'name': 'rift-ro', 'account_type': 'rift_ro', 'rift_ro': {'rift_ro': True}})
 
-        # Test rift-ro plugin
+        # Test rift-ro plugin CREATE
         w_xpath = "C,/rw-launchpad:resource-orchestrator"
         xpath = w_xpath
         yield from self.publisher.publish(w_xpath, xpath, mock_orch_acc)
@@ -122,16 +122,36 @@
 
         assert type(orch.ro_plugin) is cloud.RwNsPlugin
 
-        # Test Openmano plugin
+        # Test Openmano plugin CREATE
         mock_orch_acc = launchpadyang.ResourceOrchestrator.from_dict(
                 {'name': 'openmano',
                  'account_type': 'openmano',
-                 'openmano': {'tenant_id': "abc"}})
+                 'openmano': {'tenant_id': "abc",
+                              "port": 9999,
+                              "host": "10.64.11.77"}})
         yield from self.publisher.publish(w_xpath, xpath, mock_orch_acc)
         yield from asyncio.sleep(5, loop=self.loop)
 
-        print (type(orch.ro_plugin))
         assert type(orch.ro_plugin) is openmano_nsm.OpenmanoNsPlugin
+        assert orch.ro_plugin._cli_api._port  == mock_orch_acc.openmano.port
+        assert orch.ro_plugin._cli_api._host  == mock_orch_acc.openmano.host
+
+        # Test update
+        mock_orch_acc.openmano.port = 9789
+        mock_orch_acc.openmano.host = "10.64.11.78"
+        yield from self.dts.query_update("C,/rw-launchpad:resource-orchestrator",
+                rwdts.XactFlag.ADVISE, mock_orch_acc)
+        assert orch.ro_plugin._cli_api._port  == mock_orch_acc.openmano.port
+        assert orch.ro_plugin._cli_api._host  == mock_orch_acc.openmano.host
+
+        # Test update when a live instance exists
+        # Exception should be thrown
+        orch.handle_nsr(None, rwdts.QueryAction.CREATE)
+        mock_orch_acc.openmano.port = 9788
+
+        with self.assertRaises(Exception):
+            yield from self.dts.query_update("C,/rw-launchpad:resource-orchestrator",
+                    rwdts.XactFlag.ADVISE, mock_orch_acc)
 
         # Test delete
         yield from self.dts.query_delete("C,/rw-launchpad:resource-orchestrator",