Thanks for sending that print page. It's funny how things fall into place when you can actually see them even though you carefully explained.
The short answer is yes, repeat the italics after the slash. Keep the slash as printed and don't substitute a hyphen.
The long answer is that the 2007 Update says to repeat the italics when both WORDS are in italics, the italics is repeated for these WORD PARTS. In English, print emphasis for freestanding letters and word parts is ignored, and that is why the rule mentions only a WORD after the slash. However, in foreign language braille, the print emphasis for FOREIGN LANGUAGE freestanding letters and FOREIGN LANGUAGE word parts is retained.