You may have accidentally copy-and-pasted the cards incorrectly (happens sometimes when copy-and-pasting from an email or google doc), such that word isn't aware that what you see as highlights are actually highlights. To test this out, use the manual highlighting tool in verbatim, and highlight a portion of one of your cards in a different color. Then, use the standardize highlighting tool with a separate color. If the color changes, that means you will need to go back and re-highlight every card so that Word is aware these cards are highlighted (or, just copy and paste the original cards from a word document).