PARIS — Former Louis Vuitton chief executive Michael Burke is stepping back from his role overseeing LVMH’s Fashion Group — at least in its existing configuration — just four months after taking the helm of the unit that currently houses all of the conglomerate’s fashion brands apart from Vuitton, Dior and Loro Piana, sources familiar with the matter said.
Since April, executives including Dior CEO Delphine Arnault and Sidney…