MySQL 5.5: can't discard tablespaces for partitioned tables?

MySQL & MariaDB Other MySQL® Questions
1

Server version: 5.5.62-38.14 Percona Server (GPL), Release 38.14, Revision 7e0e1cc

I have a number of partitioned tables in a backup - eg:

--
-- Table structure for table `alchemy_spin_result`
-- Created with MySQL Version 5.5.57
--

CREATE TABLE `alchemy_spin_result` (
`id` bigint(20) unsigned NOT NULL,
`game_instance_id` bigint(20) NOT NULL,
`created_timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`won_feature` tinyint(1) NOT NULL,
`game_data` varchar(255) DEFAULT NULL,
`win_limit` int(11) NOT NULL,
`won_jackpot` tinyint(1) NOT NULL,
PRIMARY KEY (`id`,`created_timestamp`),
KEY `ALSPRSLT_FK01` (`game_instance_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE ( UNIX_TIMESTAMP(created_timestamp))
(PARTITION pMIN VALUES LESS THAN (0) ENGINE = InnoDB,
PARTITION p2015_03 VALUES LESS THAN (1427846400) ENGINE = InnoDB,
PARTITION p2015_04 VALUES LESS THAN (1430438400) ENGINE = InnoDB,
PARTITION p2015_05 VALUES LESS THAN (1433116800) ENGINE = InnoDB,
PARTITION p2015_06 VALUES LESS THAN (1435708800) ENGINE = InnoDB,
PARTITION p2015_07 VALUES LESS THAN (1438387200) ENGINE = InnoDB,
PARTITION p2015_08 VALUES LESS THAN (1441065600) ENGINE = InnoDB,
PARTITION p2015_09 VALUES LESS THAN (1443657600) ENGINE = InnoDB,
PARTITION p2015_10 VALUES LESS THAN (1446336000) ENGINE = InnoDB,
PARTITION p2015_11 VALUES LESS THAN (1448928000) ENGINE = InnoDB,
PARTITION p2015_12 VALUES LESS THAN (1451606400) ENGINE = InnoDB,
PARTITION pMAX VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */;

I need to restore a backup of this table, in the process of which I have to discard the tablespace:

mysql> alter table alchemy_spin_result discard tablespace;
ERROR 1031 (HY000): Table storage engine for 'alchemy_spin_result' doesn't have this option

It is the same for importing tablespaces, and for all my partitioned tables. Is this really not possible?