1. Log into App
2. Navigate to the file you want to open
3. Click on the file
4. Click on the Application button to use to View/Edit the file
5. Edit the file
6. Save the file to upload a new version.
7. You will get a notification when it is uploaded. You don't have to wait for the notification to exit the Microsoft app
8. Exit with the back button or close the Microsoft application another way