MySqlDump's DISABLE KEYS have no effect on import
You cannot rely on DISABLE KEYS; and ENABLE KEYS; for InnoDB because it is not implemented in the InnoDB Storage Engine. Running ALTER TABLE ... DISABLE KEYS; and ALTER TABLE ... ENABLE KEYS; were designed for MyISAM. As it says in the MySQL Documentation for ALTER TABLE:


  If you use ALTER TABLE on a MyISAM table, all nonunique indexes are created in a separate batch (as for REPAIR TABLE). This should make ALTER TABLE much faster when you have many indexes.
  
  For MyISAM tables, key updating can be controlled explicitly. Use ALTER TABLE ... DISABLE KEYS to tell MySQL to stop updating nonunique indexes. Then use ALTER TABLE ... ENABLE KEYS to re-create missing indexes. MyISAM does this with a special algorithm that is much faster than inserting keys one by one, so disabling keys before performing bulk insert operations should give a considerable speedup. Using ALTER TABLE ... DISABLE KEYS requires the INDEX privilege in addition to the privileges mentioned earlier.
  
  While the nonunique indexes are disabled, they are ignored for statements such as SELECT and EXPLAIN that otherwise would use them.


No mention is ever made of InnoDB in context with ALTER TABLE ... DISABLE/ENABLE KEYS;

Even if you run ALTER TABLE ... DISABLE KEYS; against an InnoDB table, it generates a warning:

mysql&gt; show create table mytimes\G
*************************** 1. row ***************************
       Table: mytimes
Create Table: CREATE TABLE `mytimes` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `totalTime` int(11) NOT NULL,
  `totalTimeDesc` varchar(128) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

mysql&gt; alter table mytimes disable keys;
Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql&gt; show warnings;
+-------+------+-------------------------------------------------------------+
| Level | Code | Message                                                     |
+-------+------+-------------------------------------------------------------+
| Note  | 1031 | Table storage engine for 'mytimes' doesn't have this option |
+-------+------+-------------------------------------------------------------+
1 row in set (0.00 sec)

mysql&gt;


That's why there is no affect. Please recall that @jynus mentioned the same thing in his answer in bulletpoint 7.

Keep in mind also that MyISAM keeps data and indexes in two separate files (.MYD for data, .MYI for indexes), so it would be trivial to disable and enable indexes. InnoDB keeps the PRIMARY KEY and row data in the same InnoDB pages (via the Clustered Index). Secondary indexes will carry the PRIMARY KEY as an attachment to every secondary index leaf entry. Since the data and indexes are intertwined via the Clustered Index, no one has, as of yet, attempted to implement DISABLE KEYS and ENABLE KEYS in InnoDB.