Originally Posted by
GlobalSights
...SK fares which are shown on my itinerary as ...
The question is which GDS/Software generated the itin. If they have not updated their table, a Eco extra fare may just show up as Eco and vice versa. Only Y & S SK fares on SK metal give you Eco extra.
There are some strange occurrence because of the faulty table maintainance: expedia or orbitz shows you the wrong seat map to choose your seat, UA codeshare S fares (equiv to SK W fares) show as eco extra etc.