would have notified their actions
Well...
Its a while I admit since I did helo film work but then CANP although widely advertsied was about as useful as a chocolate fireguard.
It had to be notified the previous day iirc via a cumbersome procedure and specify exact timings and locations in lat/long. As everyone who has done filming will know it is an almost impossible thing to schedule to the day, let alone the hour and unless the location is a fixed point it can wander geographically too depending on all sorts of variables. Anything involving a route was impossibly complex to report, and on some occasions when we did use it we still got close encounters - though whether they were briefed on our presence we could not tell.
The CANP reporting will still have to be made in time to filter through the system to be disseminated and included in the crew brief and that can never cope with the "go now" weather window and the location/timing variables seem pretty much insurmountable too. No doubt ease of reporting has improved, but can it ever work as intended?
In short CANP was a good idea but pretty much unworkable.
Its not as if the FJ's schedules are enshrined in stone either for the same reasons.