Can Pokemon from a later generation be traded to an earlier Generation?

Question

For example, if I tried to trade an Oshawott from a W2 game to a SS game, would it work? Because it's not in the National Dex.

Comments

no, because the earlier games don't have later Pokemon in the game.

Answer 1

No it wouldn't work for one thing SS is 4th gen while Oshawott is 5th gen so its doesn't exist yet. If you have played 5th gen before you know about the transfer where they come but don't return

Comments

Thanks! But that sucks. :(

Answer 2

The answer is – drumroll please–…

NO!

It will not work because the coding for Oshawott is not in the coding for SoulSilver, because Oshawatt was designed after SS was created. Even Game Freak can't see the future.