[-] CORE : Preserve carrier reference integrity in cart rules when updating a carrier

install-dev/upgrade/sql/1.5.4.0.sql

@@ -46,3 +46,5 @@ ALTER TABLE `PREFIX_address` CHANGE `phone` `phone` varchar(32) default NULL;
 ALTER TABLE `PREFIX_address` CHANGE `phone_mobile` `phone_mobile` varchar(32) default NULL;
 
 /* PHP:update_genders_images(); */;
+
+UPDATE `PREFIX_cart_rule_carrier` crc INNER JOIN `PREFIX_carrier` c ON crc.`id_carrier` = c.`id_carrier` SET crc.`id_carrier` = c.`id_reference`;