I was playing a new game and found 3 survivors. They've been with me for a little while, then one of them just stopped moving completely, whatever the order I would give to him. I quit the game and came back, hoping it would somehow fix this little issue, but then as I came back into my game, the 3 survivors who was in my group were just gone, as if they all just despawned. I dont know why that happened and it's really frustrating because in this game I'm trying to create a group of survivors and build a camp with them.. :/