Problems importing db from 2.2 RC 2 to 2.3.1

[Guest]

I exported just the data from my old db (not the structure) and cleared all the default data from the 2.3.1. db as other instructions have said. I imported the data to my 2.3.1. database, which is a fresh install and a new database. I receive the following error:

 

SQL query:

-- -- Dumping data for table `categories` -- INSERT INTO `categories` (`categories_id`, `categories_image`, `parent_id`, `sort_order`, `date_added`, `last_modified`) VALUES (21, NULL, 0, 0, '2010-02-03 14:00:44', NULL), (22, NULL, 0, 0, '2010-02-09 17:56:57', NULL), (23, NULL, 0, 0, '2010-02-09 18:06:19', NULL), (24, NULL, 0, 0, '2010-02-09 18:11:20', NULL), (25, NULL, 0, 0, '2010-02-09 18:16:20', NULL), (26, NULL, 0, 0, '2010-02-09 18:25:28', NULL), (27, NULL, 0, 0, '2010-02-10 12:26:11', NULL), (28, NULL, 0, 0, '2010-02-15 14:42:04', NULL), (29, NULL, 0, 0, '2010-02-15 14:56:40', NULL), (30, NULL, 0, 0, '2010-02-15 15:15:18', NULL), (31, NULL, 0, 0, '2010-02-15 15:36:57', NULL), (32, NULL, 0, 0, '2010-02-23 17:31:05', NULL), (33, NULL, 0, 0, '2010-02-23 17:55:08', NULL), (34, NULL, 0, 0, '2010-02-23 18:23:34', NULL), (35, NULL, 0, 0, '2010-02-24 15:31:07', NULL), (36, NULL, 0, 0, '2010-02-24 15:51:04', NULL), (37, NULL, 0, 0, '2010-02-24 16:11:57', NULL), (38, NULL, 0, 0, '2010-02[...]

MySQL said: 

#1062 - Duplicate entry '51' for key 1 

 

Any suggestions or is there a detailed description or info sheet on how to do this properly? I am going to be using new installs for all of my stores.

 

Thanks, and help is appreciated.