Same as Fig. 4, but planets are allowed to migrate through the disc. The yellow lines mark the final masses of the planets which around 2–3 Earth masses. Due to our disc model, planets exterior to the water ice line () migrate outwards and stay exterior to the water ice line until disc dissipation. This thus results in very similar water ice fractions in the planets compared to Fig. 4 where planets do not migrate. Only planets that form close to the central star at late times have orbits interior of 0.7 AU. Planets forming earlier and farther out are caught in the region of outward migration, which leaves them stranded at exterior orbits in the region of outward migration (yellow line in Fig. 7).