When you save your file, be sure you hit Save in the native application and not Save As. If you select Save As, you will be creating a new copy of your file on your machine, and your changes will not be saved back to Box.
When you save your file, be sure you hit Save in the native application and not Save As. If you select Save As, you will be creating a new copy of your file on your machine, and your changes will not be saved back to Box.