Idea Portal for the Drone Harmony Products

Hello, I communicate to raise an idea that is the following:
My dji spark was flying in my flight plan filming the route, I don't know why this was disconnected from the radio control and I did not return home. I tried to locate it by applying Airdata but it was not possible.
What to do to get the flight video when disconnecting from the radio control?
In other words, if the drone of the radio control is disconnected while filming and this for some other reason will fall like getting that video?