Osculating eccentricities (top plots) and inclinations (bottom plots) of the trans-Neptunian region after 4.5 Gyr of evolution in the case where Neptune starts from 39 au and migrates inwards to 18 au, then migrates outwards to its current location. All the four giant planets undergo inward plus outward migration to their current orbits. In the right plots only resonant particles in the 3:2, 5:3, 7:4, 2:1 and 5:2 MMRs are displayed. We found that in this case the resonance 5:2 is six times more populated than the 3:2 MMR. Moreover, the CKB is depleted compared to the previous cases, but so are the resonant populations.