Originally Posted by
grobma
I had exactly the opposite scenario (DL paper, AF metal, seat map not available on DL website) and was able to go to the AF website for seat selection however I first had to get my AF R/L from DL as it is different. OP may have to contact AF to get DL R/L for their booking.
No, not needed. AF booking ref (Amadeus) works on DL site. Reverse doesn't work as you rightly said.