Book assignments are published from the books area.
Let's say you have already published a book and created an assignment from a part of that book. If you then make changes to the book and republish the book, those published changes are not automatically reflected in the course. If you want to update the assignment, then need to press the Update to latest version button that appears on the right side of the book name.
Click on Courses on the left-hand side of your screen and select the course you want to preview.
Go to the Edit tab.
Click on the name of the book assignment.
Click on the Use latest version button then press Yes.
Then click on the Update button. This will update the contents for all the students.
