Weight loss after BBL. Will my results go back if I gain weight?

Hello dear!!
Thanks for the question and provided information as well.
After liposuction, the areas treated are not likely to regain fatty fullness, as many fat cells have been removed. These areas have reduced fat storage capacity.
However, if weight gain occurs, the fat will be stored in areas that have not been liposuctioned. It's hard to know for sure how weight gain will affect your body , this is why you should try to eat healthy and exercise on a regular basis, so you can maintain the results long term.
Hope this helps. Good luck :)