Opening Adobe Additions Annotations

I repeatedly highlight things in my e-books that are no longer there after opening and closing the application. I have discovered that there is a folder in my documents called "adobe editions" and it contains all my annotated ebooks. However, my Mac does not have an application for viewing them because they are in a .pdf.annot format. Is anyone aware of a application I can use to view them? Or a way to export the files into a viewable format in preview or acrobat?