I use splines with vertices in the places where I want trees planted along a road, etc. Sometimes I need to revise the tree locations due to changes in the site plan, but usually for only a few trees. The other trees need to be unchanged. I'd like there to be an 'Update' option in addition to the 'Create' button for the Creation Tools along a Path mode. This would in effect keep trees that already have vertices assigned in place and only create or move trees that have moved vertices or new vertices on the spline object. An alternative would be for Forest objects to be 'glued' or attached to the vertex positions on the spline and live-update when the vertices are moved. As it is right now, when I modify the spline vertices and hit create, all of the trees are re-randomized. I only want new trees to be randomized and the previous trees left alone.