starting in febuary

hey because i wanted to start a new game after the last transfer window had closed i included the swedish league so i could start the game in febuary although im not with a swedish team im managing sheffield wed a game which im really enjoying anyway the problem is because im starting from feb the game does not seem to have been processing the stats my young players stats seem really low and they are all severely lacking match fitness all i want to know is will this effect all the young players development in the game or will they go back to normal after a while don t want to have to start a new game.