Q 89: If you are a 7th level Druid with a 4th level pearl of power, and you have Flamestrike prepared, but convert it to a summon spell upon casting, then try to use your Pearl of Power, what happens? Which spell is reprepared?
The Pearl of Power descriptions says it recalls any one spell that you "prepared and then cast. The spell is prepared again, just as if it had not been cast."