Can I "move" a configuration "under" another one to make it a derived config?

This is what I've done (below, also attached):

I want the other "extend" configs (100 and 150), to be derived from "default" as the 50MM one is... just so the display/colors are the same.

This would take 60 seconds to make new derived configs, as it's just a single dimension change for each one.  But I'd like to know IF this is possible in case I get here again with more complicated configs.

Thanks!