Originally Posted by
Always Flyin
Keep in mind that what you find in "D" availability on publicly available tools is not necessarily the same as what is actually available for RTW tickets.
I find it to be more of an issue with "A" fares on first class RTWs.
A well-informed BA agent said as much about a change I was trying to make. I thought the issue was purely about married segments, so was scratching my head when EF showed D2 on those flights. She said Point of Commencement is factored in too. Those combination of factors isn't available from any public sources, AFAIK, though ExpertFlyer are aware this is a weakness of its current service.