2nd Leg of Rountrip Miles options?

I had booked rountrip between Atlanta and Amsterdam with miles. I flew the first leg. however I moved the Asia in the mean time, and the 2nd leg flight is coming up. I won't be able to fly it since I'm not in Amsterdam anymore.

Do I have any other option than paying 150 dollars and moving it to another date? might not even be worth it because I'd have to fly to Ams from Asia.

any and all help appreciated! thanks!