I have a linear element that belongs to a terrain model. It's a boundary element. I want it to be a break line element. I'd be okay with removing it altogether and adding it back as a break line, but I can't seem to do that.
One of the first things I tried is to remove it with the regular tools including Remove Features and Change Feature Type. I also tried selecting the 3d linear element, then expanded it in the element information window so that it lists the terrain models that it belongs to. In this case, it's just the one. I click to drop down the box. It has the list of all the feature types, but when I click anything other than Boundary, it still goes back to Boundary. I can click Remove From Terrain Model but it is ineffective.
Am I doing anything wrong or missing a step or something?