Do not save in Lumiose City, your pokemon may die.
ok, bye.
http://www.joystiq.com/2013/10/15/report-pokemon-x-y-glitch-affecting-lumiose-city-saves/
ok, bye.
http://www.joystiq.com/2013/10/15/report-pokemon-x-y-glitch-affecting-lumiose-city-saves/