UPDATE item
SET item_definition_id = 'common.items.armor.misc.neck.pendant_of_protection' WHERE item_definition_id = 'common.items.armor.misc.neck.plain_0';
UPDATE item
SET item_definition_id = 'common.items.armor.cultist.ring' WHERE item_definition_id = 'common.items.armor.misc.ring.skull';
UPDATE item
SET item_definition_id = 'common.items.armor.misc.neck.gem_of_resilience' WHERE item_definition_id = 'common.items.armor.misc.neck.plain_1'