2 of my clan mates complained that while doing CG challenges for air defense destruction, they were not receiving credit for all the ADs destroyed.

This AM my mini, Gorf Deux, #2YLJJG8LJ was doing CG challenge Wizard Tower Warfare which requires 9 WT in an hour. I did 2 attacks after selecting the challenge on base #s 8928JRQ8P & 28UGVG9R2, wiping both bases, each with 4 WTs. After that, I noticed only credit for 5 of the 8 WTs destroyed.

A third attack destroyed another base and finished the challenge.