diff -r c794ecd7f0ad cibconfig.py
--- a/cibconfig.py	Fri Jan 10 16:19:26 2014 +0900
+++ b/cibconfig.py	Fri Jan 10 16:20:55 2014 +0900
@@ -915,10 +915,10 @@
         firstelem = None
         for n in self.node.childNodes:
             if is_comment(n):
-                if firstelem:
+                if firstelem is not None:
                     l.append(n)
             else:
-                if not firstelem and is_element(n):
+                if firstelem is None and is_element(n):
                     firstelem = n
         for comm_node in l:
             common_debug("move comm %s" % comm_node.toprettyxml())