I'm curious about this part: Your data is stored locally in your browser, using IndexedDB. If you upload a book, there will be a remote copy in the cloud. I

I'm curious about this part: Your data is stored locally in your browser, using IndexedDB. If you upload a book, there will be a remote copy in the cloud. If you click the 'Import' button, does that import the book into IndexedDB only, or does it store the epub 'in the cloud'?