Originally Posted by
chinatraderjmr
If the LAX-NRT flight has R9, the NRT-BKK flight has R0 and the NRT-SIN has R9 then when looking for availability LAX-SIN it will show all segments R9 but if you look LAX-BKK it will show R0 even though the LAX-NRT has R9. They are supposed to at least upgrade you into the R space that's avail. It's not really married segments. It's just SHARES acting as if that what it is because it's screwed up
But if you were to apply a SWU to LAX-NRT-BKK, LAX-NRT would clear immediately, regardless of what it shows.
It's more of a query issue rather than a practical issue.
Now there still is an issue about waitlisted upgrades not clearing properly. And whether this has any relevance, who knows. It's certainly worth exploring since I'm not aware of an official answer.