Merlin magic suit

Those who used the Merlin magic suit, when did you stop using it? what I want to know is when are we supposed to stop using it? My baby rolled from back to tummy one random night so I stopped swaddling her the rest of that night. It was rough. Then soemome suggested the Merlin magic suit. I bought and tonight will be her first night in it. We will see how it goes. But I was under the impression that the suit is safe even when baby can roll from back to tummy but I guess I was wrong? Am I suppose to stop using it when Abby can roll?