Originally Posted by
LPK956
If the upgrade gets cleared before you turn gold, they will use your available coupon and issue a new business class ticket that will be valid regardless of what happens next. However, it seems like nowadays upgrades clear only 2-3 days before the flight, so your silver member coupon will have expired after you turn gold and they will use whatever coupons you have available as a gold member.
Oh, ok, that was my fear. I will try to squeeze a visit to Athens before if I can, if not, I will let you guys know
Thanks!