Upgrade to preferred access model via Cart in LibCentral
We require the ability to upgrade to the preferred access model via Cart in LibCentral.
Nathaniel Pockras commented
Sometimes I'll want to upgrade dozens of books all at once. It would be great if I could just add them to the cart and have a single transaction upgrading all of them, but of course right now, adding them to the cart and buying causes us to buy the license at full price instead of upgrading. If I could upgrade via the cart, it would be less work for acquisitions, since they'd have just one transaction, and I would get one "ProQuest Ebook Central Order Confirmation" email instead of dozens.