Comment 2 for bug 1413516

The link from virtual-machine default-domain__admin__si_51fbf123-df71-4be5-8b73-2d383162dbe2__1 to service-instance default-domain:admin:si_51fbf123-df71-4be5-8b73-2d383162dbe2 is not deleted. Hence, the virtual-machine object is not deleted.

From XmppMessageTrace:

At time 2015-01-14 15:11:48.505160

            <link>
                <node type=\"virtual-machine\">
                    <name>default-domain__admin__si_51fbf123-df71-4be5-8b73-2d383162dbe2__1</name>
                </node>
                <node type=\"service-instance\">
                    <name>default-domain:admin:si_51fbf123-df71-4be5-8b73-2d383162dbe2</name>
                </node>
                <metadata type=\"virtual-machine-service-instance\" />
            </link>

There is no delete to the link between service-instance to virtual-machine. There is no delete for both service-instance and virtual-machine config nodes.