I had a group of constituents that I wanted to create as a new list in NXT. Because there was nothing previously linking them together I decided to build a new list and then use the add/delete function. I added the constituents I wanted but because i hadn't set any filters, the list defaulted to everyone in my database. I did have the option to view just those that I had added but I couldn't export just this group, rather I could only export the entire list.

I had to end up adding an attribute in database view and then query-ing that group which did work but it seems like this should be a function in NXT.