Just as a test, I tried switching the output style to the Journal of Archaeological Science, and it gives a strange result for the bibliography: instead of listing references in alphabetical order based on the surnames of the first author, it lists them in the order in which they’re cited in the text. Also, the style doesn’t include any hanging indent in the bibliography, so it’s extremely hard to read and doesn’t look like the style in the latest issue of the J Archaeological Science.
Also, X9 still puts round brackets around every citation in a list of in-text citations, even though that’s not how the style is described in Edit>Output Styles>Edit"J Archaeological Science">Citations>Templates. If I edit or attempt to make any corrections in the Word document, EN X9 simply changes everything back to the wrong format when it updates the citations and bibliography.