Mobile Passport Control for family of 8

Im on the plane filling out the form within the app. I select all 8 and go to save the form. When i view the saved form, it appears only the last person i selected is listed along with the answers to the questionnaire at the bottom. Prior to the last screen i confirm and see all 8 people. Is this nornal or is there a glitch to the app? I would hate to rely on the app and only realize it registered the last person and not all 8