well no.
if you get married, the original declaration will be void. It will
revert to 50% to your wife and 50% to your parents.
And if you got kids. The parents are automatically taken out of the
picture.
It becomes 50% to your wife and 50% distributed to your
children.
So it is more correct to say. That once you ROM, you need to
re-declare your benificiaries to include your parents.