Guys I'm concerned on what will happen when trading pokemon to X and Y through the poke-transporter, because if you haven't been up to date Nintendo made a short article on why they will bannhammer everyone's "illegal" pokemon, which can also lead to corrupted save data for X and Y.
Original info:
http://www.pokemon.co.jp/info/2013/06/130628_at01.html?a001=news