The selected polyline has an associated viewport: do you want to apply it?

[DroneN3rd_508]

I'm segmenting with a polyline that I created using the polygon tool earlier, what do the options (yes/no) do?

[daniel]

If "yes", it restores the viewpoint (OpenGL camera position and orientation) in which the polyline was created. Useful if you want to perform the same segmentation on a different cloud for instance. If "no", then the current viewpoint is kept.