CZ updates task list does not show titles switching from one vendor to another - that is a big issue for us. Eg. Philosophy of science changed from University of Chicago Press to Cambridge University. The portfolio URL is still Chicago Press, but one is redirected to Cambridge University.
Finding info in CZ updates is extraordinarily difficult. Mostly because there are thousands of titles we don't have any reason to look at.
It would be very helpful to be able to search the list by ISSN and OCLC number as well.
It would be helpful to have a report indicating when a portfolio changes vendors.