Q. I've found another instance of a Cambridge Core book for which our catalog says the full text is available, but clicking through to the website

I have turned it off from discovery. We are exploring how best we can handle the Cambaridge Core Collection because they keep on adding new books that we do not have a susbcription to, and these include open access books. I have turned automatic updates from this collection for now, and this means we will not have automatic updates for the open access titles that are added to this collection also.