Good morning, Rob,
None of the two are left in the latest list of references at https://www.isc2.org/certifications/References
Best regards my friend
Every question on any of the exams should be verified ONLY against the current available versions of each document, and never with superseded versions or cancelled documents.
Are you proposing that questions must reference current sources at the time the question is written, or are you proposing that each time a source is updated, testing should be suspended until the impacted questions have been re-referenced?
(ISC)²'s regular psychometric analysis already addresses the problem of outdated questions. If the state of the art changes such that an "incorrect" answer is regularly chosen by passers, the question will be identified as "non-predictive" and discontinued. Unless there is a sudden and giant shift, a few "questionable" questions should not be a big deal, given the generous 70% threshold for passing.
Mostly the exam is about relevant experience, strong foundational knowledge and "management perspective". None of these expire when sources are refreshed. The important part of question design is that it be referenced against multiple sources with different authors to avoid author bias. As long as a given source has not been recalled or discredited, I see no compelling reason to arbitrarily banish questions that reference it.