When I add a third mirror to my mod (Link) one of the previous mirrors get deleted. I can't seem to find a way to add all three mirrors. Also, I can't add a '-' in the file name even though the error page kept saying that '-' is one of the characters that you can have there. Edit: It seems when I update any mod, it removes one of the file mirrors. So if there are three mirrors then I end up with two and if there are only two I end up with one.