The folder under the PS3 folder has to be called SAVEDATA... not SAVE DATA. There's no space between SAVE and DATA. And you have to put the entire folder named BLUS-BlahBlahBlah-FXG-BlahBlahBlah in the SAVEDATA folder, not just the PS3 folder.
I'm using the Lakers, but if you want to change teams, you can easily go to General Manager>Resign Position, then from there, you can change teams to whatever team you want.
Hope this helps.