They are not in a location that's easily accessible. The easiest way to fix this is to create a simple 2 line workflow that creates a new entry and then adds the electronic document. This will make a copy of the document for you that you can download and edit. Then after editing and saving that document to a windows location you can go back into your workflow and click the ellipse next to the name of the file, then click edit and you can replace it by uploading your edited copy. When you do so it also replaces it in any other workflows that use that same filename.