Avoid repeating navigation through controllers iOS

Question

I have a (X)UITableViewController's ViewTable linked with another(Y) ( PrototypeCells Table). The PrototypeCells have the selected index on. I created a push-segue onSelected(Y) back to the (X)UITableViewController to make automatic the back button. But this is not exactly what i wanted to reach because it entered in a loop where each time I select something the previous field are deleted.

That's not exactly what I mean saying that i want onSelect(Y) to come back to previous Controller(X).