A family of Microsoft word processing software products for creating web, email, and print documents.
Now I see what the issue is. When someone deletes text with citations in the tracking mode, it keeps it visible in the reviewing pane, thereby not deleting the citations from the current list, and the Bibliography remains unaffected. One can update the Bibliography only once all changes are accepted. In hindsight, it is obvious... I should have thought of this. But I suggest that Word implements a function that shifts in the Bibliography section the deleted citations into the reviewing pane as well. Otherwise, it looks like the update doesn't work when it does. Best.