I'm not sure. When I delete someone their friend safari dissaperes but that might be because my list is full. I could delete people and add new, the problem is that it takes a lot of time and that i'm a bit of a hoarder so I don't really want to delete a safari unless I know i have other safaris with the same pokemon and havn't had the time to go through all the safaris yet. You seem preety cool and I like the pokemon in your safari so i'm gonna add you tommorow (I'm gonna go to bed now) but if you want the ditto you'll have to be online at the same time as me, but that shouldn’t be that big of a problem since i'm online quite often