Not exactly sure but here’s an anecdote;
With the amount of fat burning and how often I hit the gym, I’m carb loading just because otherwise my muscles will look small and depleted. Usually carbs will not only bloat me but make me gain weight but now it just helps with lifting and building more muscle. Some days I don’t run this field and I still feel it working for a few days.
That being said, it’s highly possible that it’s permanent since fat cells dying off make you less prone to storing it in the future at a low enough body fat amount. Perhaps not so if you are in single digit numbers, but at a regular composition of 10-15% definitely.