Q206: Suppose I make a first level sorcerer with the elemental (fire) bloodline and give him Burning Hands as one of his starting spells. He then gets Burning Hands (a version that's technically of the energy type of his bloodline but since it's fire anyway it's identical) as one of his bonus spells at 3rd level.

Can he then switch the original Burning Hands away for some other spell at 4th level (without losing the bonus spell) or not?