Moving Google Docs from Google Drive to Dropbox
Select the Google Document you wish to move, then click on the MOVE icon in the top right menu (as shown). This will open a sidebar to the right of your screen, which will list your linked accounts on GarbleCloud.
Navigate to the destination folder in the cloud account you wish to move this file to, and simply drag and drop your file there.
Using the MOVE icon lets you move files across your linked cloud accounts.