How can I export or backup highlights and annotations that I've made in my ebooks using ADE2?

Hi,

I've made many annotations and I've highlighted a lot of paragraphs in my ebooks using ADE2.

Now I need to format my PC and reinstall Windows.

How can I export or backup my highlights and annotations so that I can keep them?

I only want to keep that information with me. How can I do it?

Thanks.