I’ve been pulling kmz files from the Skyrover X1 app, importing them into Litchi Pilot, editing them in Litchi Pilot, then exporting & copying the modified kmz files back over to Skyrover X1 app using the method described elsewhere for the DJI Mini 4 Pro.
Messy but worked well, though I needed to make some minor corrections to some parameters in the Skyrover X1 waypoints planner before executing it.
As mentioned in another post I cannot get Litchi Pilot to work directly with Skyrover X1.
The result:

