>>15962444>Platinum is gen 4 retard.Did I say otherwise? No. Now go fuck yourself.
>>15962465In Diamond/Pearl/Platinum, the long saving periods are triggered if the Pokémon Storage System is used at all, which includes catching a Pokémon that is sent to the PSS automatically. This is because the game needs to encrypt empty box data.
In HeartGold/SoulSilver, this is no longer the case but that hasn't been fully documented, AFAIK. The "Saving a lot of data..." still exists in these games, though.
In Generation V, the "Saving a lot of data..." will appear after unlocking all boxes and performing major changes in the PSS.