Update: RBdigital is still researching the issue of the redirects failing. In the meantime, they can provide libraries with a complete regeneration of the MARCs with fully updated URLS, or if you prefer to update your records yourself, they can offer you a text file which cross references ISBN, Product Number, Title, and Update URL so that you can update your records.
Please email firstname.lastname@example.org to request updated MARCs or the text file.
The URL in RBdigital MARC records brings up a "loading..." page that never redirects to the title. RBdigital is aware of this problem and is working on a solution. We will be in touch when we have more information.
In the meantime, users can access the title if they search for it in the RBdigital platform directly.