DELETE ctm FROM creature_template_movement ctm INNER JOIN creature_template ct ON ctm.CreatureId = ct.difficulty_entry_1;
DELETE ctm FROM creature_template_movement ctm INNER JOIN creature_template ct ON ctm.CreatureId = ct.difficulty_entry_2;
DELETE ctm FROM creature_template_movement ctm INNER JOIN creature_template ct ON ctm.CreatureId = ct.difficulty_entry_3;
INSERT INTO creature_template_movement (CreatureId, Ground, Swim, Flight, Rooted, Chase, Random) SELECT diff_entry, Ground, Swim, Flight, Rooted, Chase, Random FROM creature_template_movement ctm JOIN (SELECT entry, difficulty_entry_1 AS diff_entry  FROM creature_template  WHERE difficulty_entry_1 > 0) CT ON CTM.CreatureId = CT.entry;
INSERT INTO creature_template_movement (CreatureId, Ground, Swim, Flight, Rooted, Chase, Random) SELECT diff_entry, Ground, Swim, Flight, Rooted, Chase, Random FROM creature_template_movement ctm JOIN (SELECT entry, difficulty_entry_2 AS diff_entry  FROM creature_template  WHERE difficulty_entry_2 > 0) CT ON CTM.CreatureId = CT.entry;
INSERT INTO creature_template_movement (CreatureId, Ground, Swim, Flight, Rooted, Chase, Random) SELECT diff_entry, Ground, Swim, Flight, Rooted, Chase, Random FROM creature_template_movement ctm JOIN (SELECT entry, difficulty_entry_3 AS diff_entry  FROM creature_template  WHERE difficulty_entry_3 > 0) CT ON CTM.CreatureId = CT.entry;