Correct. And they are fine moving the reservations. I think people forget that Disney is a business. They have an idea like the Star Wars b-fasts that will make them a TON of money. They got a date and need to move some reservations to make it happen.
So some reservations like the op get bumped. It happens. While it might annoy the op, they won't suffer any negative effects. The star wars bfast will sell out and if the op does not take the later reservation, you 100% know another family will.
Good business move