--- a/misc/migration/3.4.0_common.py	Wed Mar 27 14:53:40 2013 +0100
+++ b/misc/migration/3.4.0_common.py	Wed Mar 27 15:38:05 2013 +0100
@@ -1,6 +1,1 @@
-from os.path import join
-from cubicweb.toolsutils import create_dir
-
-option_renamed('pyro-application-id', 'pyro-instance-id')
-
-create_dir(join(config.appdatahome, 'backup'))
+raise NotImplementedError("Cannot migrate such an old version. Use intermediate Cubiweb version (try 3.16.x)")