Hi all!
I had to spend some skywards miles as they were about to expire. I booked 2 tickets for FRA-DXB-FRA (June) travelling in Y with the intention of upgrading to J using the miles. Business seats were available on all legs in the EK booking engine. So, I bought the Y tickets and was able to upgrade the FRA outbound from Y to J. However, I can't upgrade the return flight (...premium seat not available...).
What can I do now? Any suggestions from the community?
I did DXB/FRA in Y once, was hoping not to experience that again...

Thanks!