Not really.
That's a holdover from the old days when we used organic paint.
Today we use synthetic polymers as "paint" and they include "fixers" that help cure the paint.
In addition, it takes almost 2 months from the day a Murano is "painted" until it gets to your dealer. So the "paint" is well cured when you get it!
Go ahead and wax it, if wax is what you want to use.
Homer