In this module default sort is just terrible, terrible idea. If you are creating newsletter, chances are you will want to put newest content in it. Currently you have oldest nodes first and newest on 10th page. So you will have to change sort each time you create NL. This is just bad design. I recommend to people to put a new link in menu, before that select sort by date and get variables will change in URL and then add that to menu to have sort that you want.
admin/content/scs_node_selection/nodes?sort=desc&order=Created