I think the dilemma still stands.
You engage the E-AI before entering the icing condition. Later you exit to VMC above the layer that did have actual ice, and ask for E-AI off.
As the ICE DET is still contaminated the ECAM complains until the frost evaporates, while the engine inlets are clear and not picking anything. Moreover, assuming an extreme case with some leftover deposits on the intake lips, putting the E-AI off at this stage reduces the probability of crust separation and fan interference.
There is no technical benefit of re-engaging the heating of engine intake leading edge once outside the icing conditions. It is even possible to speculate an edge case where active anti ice might reduce the margins from an undesirable aircraft state
Except the nice office people, lacking context and under indiscriminate pressure to tick boxes and polish all statistics, will come up with a rule to a) always follow the ECAM or b) never to turn off E-AI until the message ICE NOT DET shows up. To keep their spreadsheets clean and create even more quality data points to supervise.
Such is the pleasure of airline flying.
Last edited by FlightDetent; 23rd Nov 2023 at 19:18.