Изменился размер таблиц при переезде Mysql

CREATE TABLE `columns` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `field1` int(11) unsigned NOT NULL,
  `field2` int(11) unsigned NOT NULL,
  `type` varchar(16) COLLATE utf8mb4_unicode_ci NOT NULL,
  `col` varchar(33) COLLATE utf8mb4_unicode_ci NOT NULL,
  `visible` tinyint(1) unsigned NOT NULL,
  `ord` smallint(5) unsigned NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uniq` (`field2`,`type`,`col`,`field1`),
  KEY `org_user_main` (`field1`,`field2`)
) ENGINE=InnoDB AUTO_INCREMENT=82120847 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci

8.0
CREATE TABLE `columns` (
  `id` int unsigned NOT NULL AUTO_INCREMENT,
  `field1` int unsigned NOT NULL,
  `field2` int unsigned NOT NULL,
  `type` varchar(16) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `col` varchar(33) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `visible` tinyint unsigned NOT NULL,
  `ord` smallint unsigned NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uniq` (`field2`,`type`,`col`,`field1`),
  KEY `org_user_main` (`field1`,`field2`)
) ENGINE=InnoDB AUTO_INCREMENT=82111912 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci

REPAIR TABLE [table_name];
OPTIMIZE TABLE [table_name];