Have you wondered what will happen to your drones if there is a server outage and you are disconnected? You will lose them! They will remain in space at the location when the server comes back up. But they will be scoopable by anyone. So you better be quick if you are disconnected. This can be especially costly with augmented mining drones.
To recover your drones in space. Either fly to them and select to scoop them. Or once you are on grid with the drones right click your capacitor to get this menu in the image and select to reconnect to lost drones. This way is quicker is is the optimal method if it can be used.