Still not sure I understand. Using my previous example, before I could use DL award D131 (DL US-Europe) for my DL-coded (though AF-operated) PHL-CDG flight. Now I can't do this? So, instead I need to use award F131 (AF US-Europe), and specify the real AF flights?
If so, maybe just a procedural change, doesn't seem to affect my flight choices.
What happens if you have mixed flights, ie. AF metal PHL-CDG, but DL metal CDG-ATL-PHL?
Jeff