  Hypothetical exomoons around close-in giant planets may migrate inwards
and/or outwards in virtue of the interplay of the star, planet and moon tidal
interactions. These processes could be responsible for the disruption of lunar
systems, the collision of moons with planets or could provide a mechanism for
the formation of exorings. Several models have been developed to determine the
fate of exomoons when subject to the tidal effects of their host planet. None
of them have taken into account the key role that planetary evolution could
play in this process. In this paper we put together numerical models of exomoon
tidal-induced orbital evolution, results of planetary evolution and interior
structure models, to study the final fate of exomoons around evolving close-in
gas giants. We have found that planetary evolution significantly affects not
only the time-scale of exomoon migration but also its final fate. Thus, if any
change in planetary radius, internal mass distribution and rotation occurs in
time-scales lower or comparable to orbital evolution, exomoon may only migrate
outwards and prevent tidal disruption or a collision with the planet. If
exomoons are discovered in the future around close-in giant planets, our
results may contribute to constraint planetary evolution and internal structure
models.
