Hi all. This should be an easy one.

I am currently Silver but will be hitting gold fairly shortly. Today I bought a return trip to Sapporo. I have applied my silver RU voucher for the first leg of the trip.

I know that when you upgrade to Gold you lose the Silver RU if it hasn't been used. But I'm curious. Given I will upgrade to Gold well before I'm likely to hear whether my application has been successful, will I get it refunded to use another time or will it simply disappear?