OAM Identity Server Deletes User When RDN Modified (on OID)

This is known problem but i had trouble finding the solution so here it is re-posted from the OAS release notes for HP-UX... the resolution worked perfectly BTW.
This problem occurs when you use Oracle Internet Directory as the back-end repository. To fix this problem:

1. Edit the file ldapreferentialintegrityparams.xml in the following directory:
   

   Identity_Server_installation_directory\identity\oblix\data\common

2. Change the value of the parameter referential_integrity_using from oblix to ds, as follows:
   
3. Save the file.
   
4. Restart the Identity Server for the changes to take effect.
   You should be able to modify the RDN attribute value without any problem.
   
5. If you have multiple instances of the Identity Server installed, make this change to every instance of the Identity Server.