Title: Merging databases (User ID conflicts)
Last modified: August 22, 2016

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# Merging databases (User ID conflicts)

 *  [mdneer](https://wordpress.org/support/users/mdneer/)
 * (@mdneer)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/merging-databases-user-id-conflicts/)
 * I have a web store that sells downloads. The site was damaged by a php upgrade
   and I rebuilt. I want to merge the old database, but the User IDs have started
   over again from #1 up, meaning that now I have ID duplications which compromise
   each user’s account.
 * Is there a way for me to merge the databases and insure that the new user IDs
   continue from the last? In other words, can I reset the new IDs to begin at, 
   say 500?
 * Convoluted, I know, but I appreciate any help I can get.

Viewing 1 replies (of 1 total)

 *  [leejosepho](https://wordpress.org/support/users/leejosepho/)
 * (@leejosepho)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/merging-databases-user-id-conflicts/#post-5638349)
 * If you wish, you can use [https://wordpress.org/plugins/cimy-user-manager/](https://wordpress.org/plugins/cimy-user-manager/)
   to import user data without any User IDs and just let WordPress continue on from
   wherever it might be as far as numbering is concerned.

Viewing 1 replies (of 1 total)

The topic ‘Merging databases (User ID conflicts)’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [leejosepho](https://wordpress.org/support/users/leejosepho/)
 * Last activity: [11 years, 4 months ago](https://wordpress.org/support/topic/merging-databases-user-id-conflicts/#post-5638349)
 * Status: not resolved

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