Enter [STYLE *] (or replace the * with a specific highlight style) in the Research Search Entry box and limit your search to "English" and "Commentaries. Accordance will find all your highlights.
Note: Research now marks the last character of the paragraph in which the text is highlighted as a hit, not the highlighted text itself. Use" Open" to dis[play the paragraph with the Highlight.
Simply clicking on "More" expands the context, but does so in the Research tab, which does not currently display highlights.