After watching a whole game with the original tactic, I am pretty sure that no players swap positions. It seems that just two players can switch between themselves. When I try this in the instructions, the players visibly swap when you watch the game.
Since no two players swap between themselves in the original tactic, the tactic is without swapping positions at all. If it performs better than when you do swap (as mentioned before what the original thought was, AM swap with other AM and striker swap with other striker), it is understood that the tactic functions better without any swapping at all.