just piping in - i've never made it THAT WAY.. but there is another yogurt cheesecake recipe that is sugar free and fat free... will post it here just in case anyone wants...
greek yogurt *(i use fage 0%) about 3oz
jello sugar free cheesecake mix about 2 tbsp
splenda about 1 packet
fresh blueberries to taste
mix up the yogurt, powder mix and splenda - it stiffens up a bit like cheesecake, then top with the blueberries - VOILA! SF/FF deliciousness