Can you trade between SS and BW?

Question

can you trade between black and soul silver.

Answer 1

http://pokemondb.net/pokebase/64095/can-you-do-normal-trade-between-soul-silver-and-pokemon-white

Basically, you can't normal trade, but you can transfer TO White / Black or White 2 / Black 2. But you can't transfer back from Black (2) / White (2) to SoulSilver.