Thanks everyone for the responses and advice. The point about the F lounge in ZRH is a good one, and since it seems the products are similar I'll just stick with what I've got. Besides it saves me the frustration of a call to the ICC.
I'm coming back home the long way around, so won't get to experience TG's ground handling this time (though I will have plenty of fun on the SQ 380 and DL new J) before picking up the LX flight LAX-ZRH-BCN in C.