Updated advice from SAGE regarding the Swets Information Services B.V. Bankruptcy
The Swets bankruptcy trustee has now published guidance on the Swets website on what payments libraries should make to Swets. In this guidance, they make clear they will only be invoicing for services already rendered to the customer (fulfilled) and for which the publisher has been paid.
The guidance is available here: http://www.swets.com/news/important-notice-to-customersdebtors-of-swets-information-services-bv.