Yes, but if you saved a formation, then you sell certain players, you can check what happens. The system replaces the vacant positions with the most appropriate player in the squad. Also, you can quickly swap specifc players to the desired positions. The problem in live matches is more about setting up the desired formation or changing them or make adjustments, especially when using touchscreen devices. Sometimes, by the time someone made the adjustments he wanted, that too, still, somewhat messy, the match could already be furthur by 20-30 or minutes, and if it is in the final 15-20 mins, then the match is over itself.