With Pokémon Shining Diamond and Shining Pearl coming to Nintendo Switch, everyone has the chance to experience the Sinnoh region through a remastered game. Those who return can check out all the added details and new players can check out a generation they may have lost. Since Pokémon Brilliant Diamond and Brilliant Pearl are on Nintendo Switch, can you trade Pokémon with players of the Pokémon Sword and Shield versions?
We can say that no, you will not be able to do this. All Pokémon from the Pokémon Sword and Shield games will not be available for trading, especially those beyond Generation IV, which include Pokémon versions Black and White, Black 2 and White 2, X and Y, Sun and Moon, and all Pokémon Sword and Shield.
Pokémon Brilliant Diamond and Shining Pearl have a PokéDex only for Pokémon from Generation IV onwards, which include Pokémon Red and Blue, Yellow, Gold and Silver, and Pokémon Ruby and Sapphire. So, if you are looking to acquire Pokémon from the newer versions, you will not be able to take them with you on your Shining Diamond and Shining Pearl adventure.
None of these Pokémon will be available in future updates. The Pokémon you can catch from Brilliant Diamond and Brilliant Pearl are the only ones you can use. However, you will be able to trade with Pokémon Home in a future update.
