Comment 5 for bug 1675535

Forget prior post

Refreshing a single book line is not enough, all books affected by the add/removal of a column to a user category will need to be refreshed.

But what if a user doesn't have anything in the book list (like an icon, colour, or a list of user categories) to indicate a book is 'in' a user category, will they suffer the performance hit when the book list is refreshed after they use Manage User Categories?

Maybe it would be better to have a 'refresh book **list**" tool. Users who have something in the book list relating to user categories can use it as and when they want. Users who don't, wouldn't suffer 'meaningless' performance penalties when they added/removed things to a user category. And it would also take the User Category optional plugin out of this 'equation'.