Thanks.

It was late, tired... When I saw this I saved and went to bed. I should have at least wait a bit

Hello,

I was nearly zoomed to max to the limit where I could shoot with artillery and began to shoot with it manually to clear fog of war.
When I zoomed out, I noticed that artillery sheels did not clear fog of war.
https://i.imgur.com/eZEdcQm.png

Here's my saved file. Too big to be uploaded ...