Index: modules/content_migrate/content_migrate.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/cck/modules/content_migrate/content_migrate.module,v
retrieving revision 1.3
diff -u -p -w -r1.3 content_migrate.module
--- modules/content_migrate/content_migrate.module	24 Apr 2010 18:30:42 -0000	1.3
+++ modules/content_migrate/content_migrate.module	14 Dec 2010 04:14:23 -0000
@@ -131,12 +131,12 @@ function content_migrate_get_instance_va
       // Build instance values.
       $instance_value['bundle'] = $instance_value['type_name'];
       $instance_value['active'] = $instance_value['widget_active'];
-      $instance_value['default_value'] = $instance_value['widget_settings']['default_value'];
+      $instance_value['default_value'] = empty($instance_value['widget_settings']['default_value']) ? NULL : $instance_value['widget_settings']['default_value'];
       
       // Core does not support this, but retain it so 
       // another module can do something with it
       // in drupal_alter.
-      $instance_value['settings']['default_value_php'] = $instance_value['widget_settings']['default_value_php'];
+      $instance_value['settings']['default_value_php'] = empty($instance_value['widget_settings']['default_value_php']) ? NULL : $instance_value['widget_settings']['default_value_php'];
     
       // Build widget values.
       $instance_value['widget'] = array();