Thanks for your response, but now in V4 it seems one cannot transpose several tracks simultaneously as in V3. Your response covers only transposing Parts or single tracks. I can't find transposing multiple tracks simultaneously in the manual.
Also, hiding frequently used functions several layers down in sub-menus is not a good idea. The same applies to markers. When a user gets into the automatic habit of selecting a function, which is now no longer in its place, many errors are made. Humans are pretty bad at un-learning habits.