Tried a search but came up empty.

I am planning to go on a Transatlantic Cruise this fall, BCN ---> FLL

Wife and I want 2 reward tickets: CMH -> BCN.

Online (CO.com), I was able to see availability CMH - ORD - MUC. Then we would overnight at MUC airport hotel, then next day MUC - BCN.

It seemed to work on-line, as a business (TATL) award. Using multi-itinerary reward, it showed 52,500 miles (business) for the TATL leg, plus 12,500 (coach) for the MUC-BCN leg. (per person)

My problem is I want First class on LH on the ORD-MUC leg. The 2 seats are available (for extra miles), but I can not book F on line, just business.

I called the one-pass service center, and they said "this is an illegal booking".

I told them it seemed to allow it on-line, TATL in business. They said when I tried to finalize the on-line booking (i.e. credit card payment for the fees), that I would get an error.

Can anyone give me some assistance/advice? I would prefer not to have to "throw away" 1/2 of a round trip reward ticket.

thanks!