Thanks Leanne, I’ve unformatted and reformatted everything back again, but the latter operation brings up a “Select matching reference” window for each individual in-text citation. This process of reassigning references to in-text citations is not only painstakingly slow (with hundreds of in-text citations in my document, this whole thing would take hours) but also leaves some in-text citations in their temporary form, with no corresponding reference presented for them in the lower (white) part of the window.
This being said, however, this workaround seems to fix the problem of the library edits not being reflected in the references list. I just wish there were a faster way of doing it, because I really would not want to spend hours doing this chore just because of an Endnote bug…