Such as long-haul flights with many step climbs already programmed on ground before departure.
In flight, when i edited the step climb points to be earlier or later. FMS accepted them. But when approaching the stepping WPT.
No "STEP AHEAD" MSG Shown and lead to auto step climb function does not do as planned which resulted in not enough fuel to destination airport.
I tried many times, it seems that if no step climb point editing the step ahead advisory work fine and also auto stem climb do the job.
but whenever edited it no longer works.
Pls address this. Thank you very much.