I'll add to this thread since it's relevant enough. Have an SK PY ticket with one intra-Europe codeshare segment on LH. All the seats are chargeable online. Is that normal? I know that *G gets bupkis for seat selection, but it's ridiculous that a changeable/refundable (with fee) PY ticket seems to be treated by LH as Economy Light...
Btw, does anyone have an idea what an SK "A" fare maps to on LH?