Backup/restore with encoded data

[Lars Annerstedt]

I have a backup of some encoded (ENCODE(str,key_str)) data. When I do restore some data becomes corrupt after decoding.

Step 1:
====
CREATE TABLE `test` (
`cardid` char(20) NOT NULL default ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

Step 2:
====
Add ten records '0000000000000000', '1111111111111111', ... '9999999999999999' to table test.

Step 3:
====
Run UPDATE cardid set cardid=encode(cardid,'test') and You should have encoded data.

Step 4:
====
Do a backup
========================================================
-- MySQL Administrator dump 1.4
--
-- ------------------------------------------------------
-- Server version 4.1.13-nt-log


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;


--
-- Create schema test
--

CREATE DATABASE /*!32312 IF NOT EXISTS*/ test;
USE test;

--
-- Table structure for table `test`.`test`
--

DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
`cardid` char(20) NOT NULL default ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `test`.`test`
--

/*!40000 ALTER TABLE `test` DISABLE KEYS */;
INSERT INTO `test` (`cardid`) VALUES
('é\'^°–v”ßmˆ›\"²'),
('~±•È\'\0áŸIúŒ\rµ$'),
(' Åâ¼Pt–vè=?jûyÂP'),
('Ý6i„¡B£<èY¿/¬…'),
('Í&~”¶R´,ÿI¨?»’'),
('‘Zz#Èëép¢õcæZÏ'),
('™Qr(Ààâx©þkíRÄ'),
('ì%\\µ”s–\rÝhŠ™\'°'),
('O‰¤ð8Ð:®qË&½5„'),
('å\"[¼“z‘Úa?ž.·');
/*!40000 ALTER TABLE `test` ENABLE KEYS */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

========================================================

Step 5:
====
Do restore
Expected data from SELECT DECODE(cardid,'test') FROM TEST should be
'0000000000000000'
'1111111111111111'
'2222222222222222'
'3333333333333333'
'4444444444444444'
'5555555555555555'
'6666666666666666'
'7777777777777777'
'8888888888888888'
'9999999999999999'

but instead I get
0000000000000000
1111111111111111
2222222222d)$íÇÂ
3333333333333333
4444444444444444
5555555555555555
6666666666666666
7777777777777777
8888888888888888
99999999999B?´.o

Don't know if it's a bug or what? Any suggestions?
Running W2K, Admin 1.1.0rc, QB 1.1.13 and 4.1.13