Index: content.module
===================================================================
--- content.module	(revision 85)
+++ content.module	(working copy)
@@ -405,7 +405,7 @@ function content_prepare_translation(&$n
   $additions = _content_field_invoke('prepare translation', $node);
   // Merge module additions after the default ones to enable overriding
   // of field values.
-  $node = (object) array_merge((array) $node, $default_additions, $additions);
+  $node = (object) array_merge_recursive((array) $node, $default_additions, $additions);
 }
 
 /**