as the title says . someone fill me in please.

thanks

you can transfer horses to the game pool and import them to another game and there is a simple trick which by doing this can copy the horse. But please search the forum in future I've seen probably hundreds of threads which explain this and how to do it

Export = Exports your horse into the Race Builder / CK where you can trial your best horses you have exported to play in the online league.

Retire To Gamepool = Exporting your best horses into a pool where while playing another Game you can then Click Transfer then click on a horse you have in the transfer pool and export into the game your Currently playing the advantages of this is you can transfer your best horses from game to game in order to breed to improve your stable and horses in that Game.