Index: wordpressdotorg/wp-includes/ms-functions.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wordpressdotorg/wp-includes/ms-functions.php	(revision 25953)
+++ wordpressdotorg/wp-includes/ms-functions.php	(revision )
@@ -260,6 +260,15 @@
 		$reassign = (int) $reassign;
 		$wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id) );
 		$wpdb->query( $wpdb->prepare("UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id) );
+
+		$number_of_posts = 1000;
+		$paged = 0;
+		while( $posts = get_posts( array( 'author' => $reassign, 'posts_per_page' => $number_of_posts, 'paged' => $paged ) ) ) {
+			foreach( $posts as $post) {
+				clean_post_cache( $post );
+			}
+			$paged++;
+		}
 	}
 
 	restore_current_blog();