Rightclick on the NE reference to which you want to delete, and
2.
Select Delete Reference.
Deletion of an NE in an association area does not delete the NE (it will continue to exist in the association areas of other NEs, if applicable, and in the cabinet, if applicable), but deletion of an NE in the cabinet does delete the NE (it will no longer exists in the association areas of other NEs). The only way to recover an NE deleted in the cabinet is by using the search engine to search for it in the past by adjusting date parameters.