Reading Lists and Collections

[l3land]

I'm running into issues organizing my library with the Bookshelf. When I import a book, I can specify which Reading List or Collection I'd like it to be a part of, but if I want to reorganize my books, using the applications key to edit reading lists/collections lets me enter the name of the collection i'd like to add it to, but this doesn't actually work! The only way i've seen a book added to a collection is when i specify upon import. this is a problem because i'm always going to want to reorganize my books according to new categories that i might not have thought of when i was first importing them!