DISCLAIMER: This is not an extensive list of changes. Updating the name of a class is not necessarily the only change required to port old scripts.

PokemonScreen_Scene to PokemonParty_Scene
PokemonScreen to PokemonPartyScreen

PokemonSaveScene to PokemonSave_Scene
PokemonSave to PokemonSaveScreen

PokemonLoadScene to PokemonLoad_Scene
PokemonLoad to PokemonLoadScreen

PokemonSummaryScene to PokemonSummary_Scene
PokemonSummary to PokemonSummaryScreen

PokemonTradeScene to PokemonTrade_Scene

PokemonEggHatchScene to PokemonEggHatch_Scene

PokemonOptionScene to PokemonOption_Scene
PokemonOption to PokemonOptionScreen

PokemonTrainerCardScene to PokemonTrainerCard_Scene
PokemonTrainerCard to PokemonTrainerCardScreen

Scene_Pokegear to PokemonPokegear_Scene

PokemonRegionMapScene to PokemonRegionMap_Scene
PokemonRegionMap to PokemonRegionMapScreen

Scene_Jukebox to PokemonJukebox_Scene
*New* PokemonJukeboxScreen

MoveRelearnerScene to MoveRelearner_Scene

PokemonMartScene to PokemonMart_Scene

HallOfFameScene to HallOfFame_Scene