There's not enough information provided to answer this question. Faraway place can doesn't always refer to an event, it can mean that the Pokemon was traded from a future game to past game in same Gen. The information of where it's from then becomes lost, so it says "faraway place". I'm guessing the egg hatch info is kept between games. Regardless, any cheat if professionally done can mimic a real Pokemon very closely. Don't be thrown off by the Pokemon being Sylveon, remember that the Pokemon could have been traded from owner to owner as a shiny eevee for a long time before reaching Gen 6. I would have done it that way, seeing as a shiny eevee is more valuable than a shiny eeveelution.