Lagrangian radii showing the evolution of different mass fractions in the cluster: from top to bottom 90, 80 ... 20, 10, 5, 3, 2, 1, and 0.1% of the total mass. The green rectangle shows the interval of time before and after the kick of the IMBH off the cluster. All mass curves suffer a jump at the moment of ejection. After the removal of the heating source from the centre, the curves are flatter and their slopes start to decrease.