Hi, in game error. Mission equip rare support champ with life artifacts of level 4 or higher. In game the progress tab under the mission does not exceed 2/6

I assume that I might have sacrificed a rare champ at some stage and the mission is keeping record of the sacrificed champ and does not count the two other rare support Champs that have been equipped with level for life artifacts. 

Please fix this, it's so frustrating not being able to progress with my missions. 

Thanks guys