I'm not in a position to see Resolution 727, but I'll take your word for it. My experience, however, with a DONE5 where a flight wasn't available in D at booking but became available prior to our first flight was that the issuing carrier refused to change to D until we'd flown at least one flight, insisting that they could only revalidate until the first flight was taken, and changing to D required a reissue.



That's excellent, thank you.