Annapurna Circuit Expedition Changed Goal

I was almost done with the Annapurna Circuit challenge, and the goal changed without notice. It was 160 km (~99 miles). I got to 93 or 94 miles and the Goal changed to 161 MILES (not km, as created). The badge still says 160K right on it, but now I have over 65 added miles to walk/run/step in order to complete the challenge. What’s up with that?