Yogesh:
To move existing users from one group to another you can:
- go manually to each user and change its group membership. OR:
- Use RDBMS synchronization where you can fill a CSV file with the actions that you want (change group membership in your case) and import that to the ACS.
For RDBMS sync you can read the user guide:
http://tiny.cc/n13b1w
This config example may also be useful about how to import the csv file:
http://tiny.cc/533b1w
I suggest that you read the guide and come back to ask here if you have any concern.
HTH
Amjad
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