Follow- up: BBL, Bicycling, shrink or enhance?

Hi I recently asked about what riding a bike would do to a BBL months later. The responses I got all lead to the seat but I was curious about the exercise itself? I know the workout would enhance my muscles but would it shrink all the cells I had injected into the top of my bottom during the procedure? I'm not concerned about sitting especially since she only injected the fat at the top of it to give it a curve. I'm just worried all the exercise itself would undo the results. Thank you.