Simple question really (I hope), is it possible to merge two surfaces by a common id? I have multiple surfaces and only want 1 output, they have same id number but I can't seem to find any method of combining them into 1 feature. I am initially using SurfaceOnSurfaceOverlayer to remove overlapping features, but then I end up with lots of surfaces, I want to then join them back together, but neither FeatureMerger, Merger or MeshMerger work. Any suggestions?
Dan