I was trying to load 3d lines to AGOL from Pro 1.4 with some problems. Using the "Share as Web Scene" in a scene with two linear layers, I shared the web scene and the related feature layers to my AGOL. Opening the scene in AGOL, I discovered that only some layers are present, while others are just listed but empty (no geometries nor rows in the attribute table).
So, as I found documentations on sharing 3d points and multipatch, but not 3d lines (and polygons), except a page saying that "it is possible to do it", I'd be happy if someone could provide a useful link, or a brief explanation on how to share 3d lines to AGOL (or Portal). Many thanks in advance!