could you resorver it?

yes, go into your modfolder, then mission pack1/resource/map/singel/000/deadhills (for exampel) open game.mi with notepad or other editior and then search for "discovered off" or something like that. change it to "discovered on"
than it looks simelar like that

{"difficulty"
{condition
{terms
{"1.event"
{id "start"}
}
}
}
{actions
{"if"
{condition
{type difficulty}
{level easy}
}
{"entity_state"
{selector
{player "1"}
}
{discovered on}