Wouldnt have thought wire would come off a belt? Maybe you just got unlucky and something got in the cvt air intake before?
If it looks ok I would just try it anyway. When your new belt arrives see if its much wider than your old belt, my new belt was about 2-3mm wider. And if you already got the clutch off then take off the torque spring and pull the rear pulley apart as far as the go, check the new belt fits right into the bottom of the pulley, my new one would not, that gave me the problems.