Enable Files instead of Notes and Attachments
If you are moving over to using Files instead of Notes and Attachments all you need to do is the following for your labels and shipping documents to be saves as files.
1. Go to Setup > Develop > Custom Settings
2. Find UPS Shipmate General Settings and click on Manage
3. Edit the custom setting record, if there isn't one create a new one.
4. Make sure the "Use Files" checkbox is checked.
5. Click Save