Deleting audiobooks from itunes (in the Devices section)

In previous itunes releases, I was able to delete audiobooks from both the iTunes library and the iTunes devices section. Recently, I can only delete from the iTunes library, and not the iTunes devices section. What is the process? Please note, I have no problems deleting the audiobooks from my iPhone device outside of itunes, but the books still appear in my iTunes devices list.

I have iPhone 12 Pro Max with ios verion 18.3.1.