You could be correct about no report.
I can definitely see this happening though. You get busy, it's late, you're tired, fatigued, rushed. You make mistakes. You load a runway, not sure what departure, so you think, "I'll wait to put that in." Then when things start happening you completely forget to go back and load it.
Fatigue is a terrible thing that is hard to recognize by one self. If both pilots are fatigued then it becomes even worse.