I have no idea and frankly I don't care. It's irrelevant. The Schindlers are cashing in on their daughter's death, and no matter amount of Micahel-bashing, no matter how deserved, will change that.
In other words, no, Michael is not donating any to charity. I am not surpised.
Did they pay for medical expenses over the years. That isn't cheap. If they can get back money spent in that way I don't have a problem with it. To make a profit, is different.