unknown gba type

[ifyfg]

ok, apparently if you hack a gba pokemon, then pal park it, you get unknown gba type in the legality checker.
but i swear it said something were if i evolve it (an unhacked gba pokemon) it can sometimes go to unknown gba type? and unknown gba tpe doesn't mean it's a hack and nothing else? it could be legit?
so i could evolve my hacked pokemon, and people might think it's legit?
it is legal by the way, just not legit.
thanks, ifyfg.

[Syberia]

If it evolves, it can get illegal trash bytes if the name of the pokemon it's evolving into is shorter than the name of what it evolved from. Its IVs, PID, and type in legit.exe will not change.