Third Party EPUBs and PDFs not Showing Up in iOS Finder Sync
In my book library on my Mac, I have a combination of books I've purchased in the Apple Books Store, as well as EPUB files I've purchased on other sites and imported into my library, and PDFs.
But when I try to sync my phone or iPad in the Finder, under the Books tab, only the items purchased in the Books Store are there. None of my other EPUBs or PDFs show up in the list and thus I can't sync them to my devices. Is there a fix for this?