I'm having some trouble with the citation feature in word and this is happening to a lot of other people in many different word versions so I'm starting to think that it's a wanted feature. The image is much more clear than me explaining so here it is:
As you can see I'm not using in the text the citation [9] and word knows it since in the source manager is not marked as used but when I update the reference field the unused references appear at the end even when are not used. When I remove them from the current list in the manager the problem disappears. Is it the way word handle references or is it a bug unsolved since at least word 2007? Because I my view this way of working it's rather unlogical.