Kammala jumla mai zuwa: Tare da ƙirƙirar Jamhuriyar Cisalpine a ƙarƙashin mamayar Napoleon, Giovanni ya zama ɗaya daga cikin daraktocin sabuwar gwamnatin. Amma jayayya da Janar Brune ya kai ga korarsa. Tare da dawowar gwamnatin Hapsburg, an daure shi a Fort of Cattaro. Bayan da
Yaƙin Marengo, da kuma cin nasarar Austrians, an sake kiran sa zuwa gwamnati. Ya rike mukamai daban-daban, gami da shugaban majalisar dattijai a cikin shekarun 1809, 1811, da 1812. Ya goyi bayan burin Napoleon don neman taken Sarkin Italiya, kuma a matsayin lada an ba shi taken lamba, da kuma kyaututtuka na Iron Crown da Legion of Honor. Ya yi ƙoƙari ba tare da nasara ba don sanya Eugène de Beauharnais a matsayin sarki na Jamhuriyar Arewacin Italiya. Tare da faduwar Napoleon, babban kudin shigarsa shine koyar da lissafi.