Will a BBL survive bodybuilding? (photo)

I’m a body builder and do shows every year or every other year. I want a bbl so my hips and butt look curvier in the off season. I’m finding very mixed information about the fat and how it deals with weight loss or gain. From off season to show my weight July fluctuates about 15lbs. Will the fat transferred to the buttocks and hips grow and shrink like normal fat after a bbl? Like if I lose weight to compete and then gain it back will it go back to the hips and butt where it was transferred to? Or will it go back to the donor site?