Yes. AutoSave is always on and saves your changes as you work. If at any time you lose your internet connection or turn it off, any pending changes will sync as soon as you’re back online.
If you need to work in a location without an internet connection, make sure to download and open the documents you want on your iPad before you go offline.
To turn AutoSave on or off, tap File.
Note AutoSave is disabled when you’re editing a presentation at the same time as others.