Changes here save automatically. Tip: tap the “+” chips at either end of the date row to add a day, then drag items onto it.
Nothing downloads on its own any more. When you’ve made changes that aren’t saved in a backup file yet, an orange dot appears on the “i” button — tap “Back up now” when convenient and ONE file with every trip lands in your Downloads / iCloud (the newest file is always the complete itinerary). “Restore backup” loads one back.