Search for Slave Instance also.

Threat Slave Instance as same as Software Instance in this case.

master/bt5/vifib_base/SkinTemplateItem/portal_skins/vifib_base/SoftwareInstance_getRootSoftwareInstanceUid.xml

@@ -54,7 +54,7 @@
 while (predecessor_software_instance is not None):\n
   root_software_instance = predecessor_software_instance\n
   predecessor_software_instance = predecessor_software_instance.getPredecessorRelatedValue(\n
-    portal_type="Software Instance")\n
+    portal_type=["Software Instance", "Slave Instance"])\n
 return root_software_instance.getUid()\n
 </string> </value>
         </item>

master/bt5/vifib_base/bt/revision

-255
\ No newline at end of file
+256
\ No newline at end of file