Path
Path shows or hides the walk line. It is the same switch as the Walk path layer.
Path in the 3D view shows or hides the walk trail, its heading ticks, radar-style pose blips (the last sample is the larger mark), start and end flags, and the photo poles. It is the same switch as the Walk path layer on the map. The choice is saved with that layer, on your account, and comes back on another device.
The line is the points of the walks that count at the moment you are looking at. A deleted walk is not on the line. While you look back, the line is the one that existed at that date. See History.
A point far from the field does not push the field away. Out of the zone, a red mark stays in the center, with the distance and an arrowhead toward where you are.