How Do I prevent duplicate users from being created in CROWD?

[JT]

We are using CROWD with Confluence. I have found duplicate users in our CROWD instance and am now going through the process of de-activateing the duplicates. Unfortunately, the de-activated users are still displayed in Confluence when you search for a users while editing a page (example: when searching for users while adding restictions to a page).

Is there any way of preventing duplicate users from being created in CROWD so this does not happen again?

[Oli S]

perhaps this would help:

http://confluence.atlassian.com/display/CONFKB/Duplicates+in+the+People+Directory

http://confluence.atlassian.com/display/CONFKB/Duplicate+Users+Appear+in+the+%27external_entities%27+Table

https://jira.atlassian.com/browse/CONF-11467

[JT]

Thanks Oliver, but my issue is different. I actually have duplicate users in CROWD. The users only show up once in the Confluence people directory, but multiple times when you search for a user while adding restrictions to a page.