Why is my edited Pokemon gaining boosted exp?

[Equivalent]

I changed the nature, IVs, and EVs for my Gyarados. I kept the same ID and SID for it. I used the generator to give it a legitimate PID.

Why is Gyarados now gaining boosted exp as if it were traded over?

[john698]

Hi!, the pokemon gains boosted exp because its ID and SID doesnt match with yours, i think the ID and SID of your game doesnt have to be the same number. Try to see what numbers the other pokemon have (original) and copy/paste the numbers.

[Arthzil]

Hi!, the pokemon gains boosted exp because its ID and SID doesnt match with yours, i think the ID and SID of your game doesnt have to be the same number. Try to see what numbers the other pokemon have (original) and copy/paste the numbers.

They can be the same but it's like getting same numbers in 2 lotteries in a row. ID and SID are 2 different things and if either is different than player it's marked as traded.

Factors that determine traded/not traded are gender and game origin. Also check if date of obtaining isn't before you actually started to play.