Final-density maps for CM2 and CM12 and for the stellar component that comes from each progenitor (C2+C2 or C1+C2) are shown in the upper and lower panels, respectively. Left panels: entire cluster, central panels: stars coming from the first progenitor and right panels: those coming from the second progenitor that merge to form the new cluster. The black solid line and the purple dashed lines represent the half mass and tidal radius of each system, respectively. While for CM2 the two sub-clusters have similar densities and spatial distributions, for CM12 the C1 component is more dense and extended than the one inherited from C2.