[not-a-bug] Assault Phase - confused

I'm confused. My other thread mentions the 1 on 1 attack from Peru to Argentina. After I won, it went to this transfer section: http://www.screencast.com/users/Webnet/folders/Jing/media/bd39c279-957d-4e7c-a9d9-6756bfa40659 What is that? It shows I currently have 1 soldier there so why is it requiring I transfer?

When you are done attacking you can choose how many troops you want to transfer. However it required you have at least 1, so 1 is automatically placed, and you can choose how many more you want to transfer.