No consistency in in-text citation et al italics, then some not in italics

Good you resolved your issue. Yes, any corrections to the Endnote reference records should be automatically reflected in the corresponding document. If the corrections are not updated automatically you will just need to do so manually by clicking the “Update citations and bibliography” (in MS Word).

What I meant by the phrase “adjust MS Word” is to update the style selection in the Endnote tab of the MS Word ribbon (see attached image).