Azimuthally-averaged ice line location for three sample models, showcasing three possible evolution scenarios, panel a: spiral heating pushes ice line outwards; panel b: ice line recedes to the inner gap edge; panel c: shock heating initially pushes ice line outwards but eventually a gap is carved and ice line recedes inwards. These effects are amplified for more massive planets. It should be noted that in the case of a cold gap, ice can recondense within the gap region (panel a).