Yes they do go back to easy, i did not implement a save state for them, but you are right, as for the current UI design it is better to keep them where you left them at!.
and oh may, i did not see that sneaky node!!!, it is a duplicate, and it is not intended, and i have already located the issue and its fix :D.
but again all these fixes will be in the next update, as the last one just game out 2 days ago!