I was speaking with the AA RTW desk to confirm my ticket info for my Saturday pickup of my DONE5, and the agent I spoke with mentioned that they're currently debating (within that office, I guess) whether someone who purchases a *ONE* ticket prior to June 1 would be able to reissue it as a 17-20 segment ticket after that date (e.g., if it was issued as a 20-segment ticket, the passenger flew one segment, and then did a routing change). Presumably there would not be a problem flying four segments, and then doing a reissue as an e-ticket, but I think her point was that AA won't reissue any paper tickets after the June 1 deadline. This probably doesn't affect many people, but just fyi.