If I take off in GPS mode with home point recorded and then switch to Atti but later in a flight switch back to GPS will the original home point still be the one used to return home?

Yes - I have done that.  There was a problem in android Go App 3.1.2 where the home point would jump to a far off random location. That appears to have been fixed in 3.1.3.  iOS never had this problem.

When manually switching to ATTI mode, your Phantom is still able to use the GPS data if needed. That'll allow it to return back to the last marked home point if RTH is initiated during the flight.

Thanks for that!

Stacky Posted at 2017-2-19 14:11
Thanks for that!

But I will always take a peak at the map and verify the location if not correct point to the remote controller.

dronist Posted at 2017-2-19 20:18
But I will always take a peak at the map and verify the location if not correct point to the remote controller.

Plus you can always use your RC and rotate your drone to see your location.