So I'm trying to get 100% (at 98%) on ac3 remastered, all I have to do is complete the frontiersman challenge (I'm on the 2nd challenge). One of the tasks say that I have visit all 3 stores in the frontier, so I've been to all 3 stores in the frontier and been inside them. Yet it will still say that I've have not visited the stores even though I did, I still have the challenge to do still. A solution to this problem will be appreciated.