remember that the domestic licenses from GT1 saved to your GT2 savegame and you already ahd them done for you in GT2 if you had done them in GT1? I guess its the same here, but since GT4P only offers five tracks, yet a full spectrum of license tests, i reckon there'll be two or three other colours in GT4 that you have to do, but prologue will do the rrest for you.
Seems a bit mean given that US peeps will have to start from the beginning and europeans and Japanese wil have a headstart on em, but hey, I'm not KY so I wouldnt have control over that.