G6: Consolidating Multiple Authentication Sources

Question

Hello everyone!
When our development environment was setup an Authentication Source was created to go against 1 of the 4 containers in our Active Directory. The containers correspond to different regions of our organization (North, South, East West). At the time we just wanted to test the North people so we set the OU to that container.
This past week I wanted to expand our user base to include the 3 other containers. Unsure of the exact procedure to do this, I copied the original AuthSource and created 3 new ones. The users were successfully pulled in, however at the login screen there are now 5 authentication sources (Plumtree Users, North, South, East, West). I realize now that a mistaken was made from the start in pulling from a container rather than the root, or in my second step of creating new sources rather than manipulating the original. (chalk it up to a learning curve!)
The Authentication Sources are tied directly to the users that they have loaded and can't be deleted unless the associated users/groups are "removed".
Would I be correct in assuming that the only way to consolidate our login Authentication Sources would be to delete all of our users followed by all of the Auth Sources and then create a single source to query the root? Is there any way to change the users Auth Source?
Are there was any other "best practices" or pitfalls that I should be aware of? Especially things that can't be modified after the initial import as in this case?
Thanks for any help,
Geoff
Geoff Garcia
Producer, Enterprise Portal
March of Dimes National Office
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Answer 1

I would do this:
Delete the "new" (South, West, East) users, groups, then delete the corresponding authentication sources
Modify the "original" (North) authentication source's User Query Base (and Query Filter if necessary) Rename the authentication source if you like. Do not change the User Unique Name attribute.
Sync the original authentication souce. This should just add the users from the modifed root, and assuming that the original users are still included in the modified base and query, they should just stay right there.