Drawing Scale List

I have installed the latest version of DraftSight & noticed a handy added feature called "Drawing Scale List" under System Options & Drawing Settings. It appears to be an editable list, but editing the default Drawing Scale List does not do anything to the Drawing Scale List in a drawing.

The list under Drawing Settings is the one that is used in a drawing, but how do you make each new drawing use the default Drawing Scale List, the one under the System Options? Why are there even 2 different lists?