My problem is solved by using this tutorial.........
http://www.geekstogo.com/forum/topic/326541-windows-8-dual-boot-restore-points/
So far the Win 10 restore points which I created manually after the registry hack have stayed put.
This matter is considered closed.
Adding .....
I assume it is safe to say that the tutorial was not created because one person posted an unfathomable question.
I further will assume it is safe to say that quite a few users have encountered this issue, hence some one published this tutorial.
Perhaps, the Guru hat and other exemplary badges were too tight and heavy making one forgot that one did not, could not and would not know everything. Come on down and be a real human....once in a while. It won't...