This was most likely due to the fact that since 909 Amalfi had been heavily trading with the Fatimid Caliphate and did not want to jeopardize relations with this powerful trade partner.
Det skyldes mest sandsynligt, at Amalfi deltog kraftigt i handlen med Fatimidekalifatet efter 909, og man ville ikke udsætte forholdet til denne magtfulde handelspartner for fare.