Sharepoint 2010. Our IT guys have recently renamed many Active Directory security groups, however PeoplePicker appears to now display both the old name and new name in results. I assume the new name is coming directly from AD, but the old name is coming from the sharepoint content database UserInfo table. Additionally, if we assign permissions to one of the 2 returned results, when next searching for the same group, sharepoint appears to have merged the information for the 2 groups together and so only one result is returned. However, it is keeping the old (incorrect) "title" rather than the new one.
I'm wondering if anyone has any solutions for this issue? I know I can locate the "group" in Site Settings > People and Groups, and click "Delete user from Site Collection", but then I will lose any permissions set for this group within my sharepoint site. Any help would be appreciated!