Index: wp-includes/comment.php
===================================================================
--- wp-includes/comment.php	(revision 30776)
+++ wp-includes/comment.php	(working copy)
@@ -2234,7 +2234,7 @@
 
 	$comment_ID = $data['comment_ID'];
 	$comment_post_ID = $data['comment_post_ID'];
-	$keys = array( 'comment_content', 'comment_author', 'comment_author_email', 'comment_approved', 'comment_karma', 'comment_author_url', 'comment_date', 'comment_date_gmt', 'comment_parent' );
+	$keys = array( 'comment_content', 'comment_author', 'comment_author_email', 'comment_approved', 'comment_karma', 'comment_author_url', 'comment_date', 'comment_date_gmt', 'comment_type', 'comment_parent' );
 	$data = wp_array_slice_assoc( $data, $keys );
 	$rval = $wpdb->update( $wpdb->comments, $data, compact( 'comment_ID' ) );