Hi, I am working on testing UGCS with a Pixhawk platform hexacopter but I have a few questions. I'm hoping the UGCS engineers can help.

1. Is Pixhawk and PX4 the same thing? I see standard vehicle platforms for Ardupilot and PX4, which should I be using for Pixhawk?

2. Why does ardupilot/PX4 have no "Action on loss of datalink" pull down under "route parameters"? What will it do if datalink is lost? I don't see a setting for this in Mission Planner either so this is probably the wrong place to ask this question.

3. Once a UGCS route is created, how can that route be saved for recall at a later date? When creating a route I see the option to open from a file but there is no save button.

4. Is it possible when flying to "quickly" enter a route somewhere that is not the starting point? I know how to do it by editing the route with a different starting point, but this takes some time to calculate and upload, not good for an emergency situation where the drone needs to quickly come home via a specified route. For example in Mission Planner you can "goto" any arbitrary waypoint and continue on the route from there.

5. Is it possible to edit a route slightly while flying? For example the drone is a bit too close to trees, so I want to change the altitude of a waypoint that the drone has not approached yet. When I did this and uploaded the route, the drone turned back to the first waypoint and started from the beginning.

Thanks for the help!

Alex