This checkbox remains selected for All Configuration and System Configuration. Full State backup does not have Preserver Identity feature. All configs, logical and system backups seem to allow "preserve identities": https://books.google.pt/books?id=5VXUDwAAQBAJ&pg=PT699&lpg=PT699&dq=Preserve+Identities +feature+backup+ucs&source=bl&ots=daWxti4DV& sig=ACfU3U3X8UlPtS8EewzRIqTxqpyNVqOaNQ&hl=es419& sa=X&ved=2ahUKEwiYhtaxyMDqAhXFzIUKHXl8CzoQ6AEwC3oECAoQAQ#v=onepage&q=Preserve %20Identities%20feature%20backup%20ucs&f=false