That's kind of crappy, isn't it? o_O

All trophies and their requirements are identical for all regions, yet they're not interchangeable?

Let's say I own a European copy of a game with trophy support and I've I earned 50% of the trophies. I then sell the game, only to realise that I miss playing it, so I decide to buy it again and I end up getting the Japanese edition. Obviously, I can't use my old European save file and so have to create a new one. No big deal. But are the trophy sets exactly the same regardless of what copy of the game you're playing? In other words, can I use the Japanese copy to earn the remaining 50% and have them appear just as if I had gotten them with my European copy?

Can you change the order in which your save data appears on your PSP when you transfer it from your computer onto a memory stick?