hmmm...seems like a glitch somewhere. When DDS first came out there was some issues with how some missions got set up. I believe it stemmed from the fact that D-Day missions are the translations of both SMG DoD and RtC. The D-Day deck was divided into two decks 1-64 (DoD)and 64-128(RtC) which would have worked fine, but at some point the cards were re-numbered. IIRC, the Orders Cards from deck one were moved to deck two which pushed deck two's Story Cards into deck one. I wonder if you are seeing some variation of that glitch.
You may want to also shoot an email to LBG with your find, just to cover all the bases.