/* 
 * Recover the old entries in the archive table
 * This is safe because none of the entries in the old table exist in the current
 * (which is exactly the problem we're trying to solve)
 * Also, the old table can't have any entries that the current has
 */
insert into ArchWiki.archive select * from OldTempArchWiki.archive;

/*
 * Recover the old entries in the text table
 * This query only inserts the entries that don't exist in the current table
 * Note the dummy 'ArchWiki.text.old_id=ArchWiki.text.old_id' as the update operation
 * http://stackoverflow.com/questions/1361340/how-to-insert-if-not-exists-in-mysql
 */
insert into ArchWiki.text select * from OldTempArchWiki.text on duplicate key update ArchWiki.text.old_id=ArchWiki.text.old_id;