A kluge approach is to select Edit/Select All from the note's menu, then Control-C (copy command for Windows). Then open a blank Word doc, then Control-V (paste command for Windows). Then print the Word doc and it will have the highlights. When you paste, I think you need to be sure to select the option to keep the source formatting if you right-click instead of Ctl-V. This worked for me. I assume it works for Mac (revising commands as appropriate), but didn't try it.