Moving documents and content from SharePoint to Box can be as simple as dragging and dropping files from Windows Explorer into Box. This is the best way to migrate a small amount of content from SharePoint to Box.
To start, navigate to the ribbon in SharePoint and select Open with Explorer.
Figure 1: Navigate from the ribbon in SharePoint 2010.
Next, drag and drop the files and folders that you want to move from SharePoint to a local storage location. For best results, select a local folder on your computer.
Figure 2: You can mount a SharePoint library through WebDav.
Before copying content to Box, you must remove any prohibited characters (\ / “ ; < > | * and ?) from file names. A tool such as Better Rename can automate this process for you.
Figure 3: Remove any unsupported special characters from filenames before moving them to Box.