[Tsukimaru]

guys, i have a question. i really want to train a raikou, but as you know, it is a roaming pokemon, so once i find it in leaf green, it´s nature remains the same, so it´s stats.
i wonder that if i trade it to emerald, delete the lg file, clear it up again, and get to trade with emerald again, if i trade the old raikou to check the new raikou location, if everytime i find it is the "first time" i meet it in the new game, would it spawn a new raikou every time? (diferent stats and nature)?