What will a Pokemon's summary say if you hatched it in Mystery Zone?

Question

Let's say, you have the Togepi egg from Cynthia in Platinum, and you somehow managed to enter Mystery Zone (Walk-through-walls, or hacking maybe). You see, egg-hatched mons always has the "[trainer who gave it to you]" and "Hatched in [place]" in their summary page in the Generation 4 games. So...what will happen if you happened to hatch the Egg when you're in Mystery Zone? What will the summary page for the hatched mon say? "Hatched in Mystery Zone"?

I was strolling around to hatch my newly-bred Eevee egg and was randomly wondering about this.

Answer 1

It will say Hatched in Mystery Zone. Because the game recognizes the Mystery Zone as a location, (even if it doesn't show up on your map, like gates between routes,) the egg will say it was hatched in the Mystery Zone.

This is different from hatching an egg in the void of SwSh, where the Pokemon will say it came from a faraway place.

Source: experience