I'm using an edge visitor to create subgraphs. I do a simple sub_graph = myGraph.create_subgraphs(), to create a subgraph and then I add vertices using add_vertex(vertex,sub_graph). The vertices are added but the corresponding edges are not. My basic typedefs are: ////////// typedef boost::property Tmp; typedef boost::property GES_EdgeProperty; typedef boost::property Tmp2; typedef boost::property Tmp3; typedef boost::property GES_VertexProperty; typedef boost::adjacency_list< boost::vecS, boost::vecS ,boost::directedS ,GES_VertexProperty ,GES_EdgeProperty> GES_AdjacencyList; typedef boost::subgraph GES_RTGraph; ////////// That is, the graph type is the same as the sub-graph type, which I think is right? Does anybody have any idea why the edges aren't being transferred to the sub-graph?