Kobobooks: Selecting which books are synced?

I googled a bit, but I have trouble to believe the results. :)

Is it correct that if I sync my device (mostly to transfer the Reading Life stats), the only way to actually control which Kobobooks' bought e-books are synced with my e-reader is to delete the ones that I don't want to get transferred?

I understand that I can restore them from the trashcan, but this seems a little odd. I use Calibre to manage my books, so essentially I'd have to move my entire, paid-for library at Kobobooks to the trash.

edit: The library has a "purchased" tab, however, books are either in both "I'm reading" and "Purchased", or in neither category. If I delete a book from "I'm reading", it is also deleted from "Purchased".