All In One Link Cable

I bought this all in on cable so that I could battle my friend on his gamecube on pokemon XD. However, when the connection screen showed up it said to save your pokemon game at a pokemon center. I saved it at the center, and connected at the same moment that this cable was detectimg the connection it automatically stopped the connection and said i didn't save properly, AND ON TOP OF THAT IT DELETED MY WHOLE POKEMON SAVED FILE, and now i have to start all over. Bah! I wouldn't buy this cable, maybe you should get a brand name one.