Try this: after changing the controls in-game and quit, when you're back into 7th Heaven, open Settings -> Game Launcher... , then under Options should be a drop-down menu for the controls selection with a save icon: click the save icon and give it a name, then choose the control scheme you just created from the drop-down menu. If you launch the game via 7th Heaven before doing this, 7th Heaven will overwrite your custom control configuration with the one already set in the drop-down menu, thus removing your changes.