Around mid-July I flew my M2P using a new version of Litchi, Waypoints mode. The signal was lost, and the M2P never came home. (By the way I flew Litchi Waypoints a lot without this problem.) I was able to look at Litchi's flight log on the iPhone but of course it had no record of what happened after the signal loss. So, on July 21 I flew my P4P in search of the M2P. I was dumb enough to use Litchi again, and I lost the P4P too once the signal was lost! However, I hiked up close enough to the P4P to get a signal and therefore its precise GPS coordinates. Where I lost these drones was up on a mountain. I drove a Toyota 4Runner up near where the P4P was, but got stuck. Once a passerby rescued the car (and therefore me) I hurried home and didd't go get the drone. Only today (meaning Sunday) did I go up there again and found the P4P and brought it home (very exciting to see it there, intact!) I suspect what happened to both drones was that once the signal was lost, they landed instead of go on or come home. Now that the P4P is home, should I look for some on-aircraft log file to see what happened? Thanks.