Deleting a user group in AFS-BO breaks the links between the group and the search entities available in AFS-BO.
In the Administration screen, for a selected organization, the Groups gives the list of the groups for that organization. When a group is selected, the corresponding rights are displayed in the table and the Modify the Group command can be chosen to open the MODIFY A GROUP OF USER dialog box.
The Delete command must be chosen to delete the group.
A click in the confirmation box definitely deletes the group in AFS-BO. However the members of the group are kept under the Users list.