Hi Keith,

Sorry for the late reply. Please use IINodeTab instead of ITab<IINode>. It derives from ITab<IINode> so should be compatible. Here's a sample of how to copy from a list:

List<IINode> nodeList;
                IINodeTab nodeTab;
                foreach( var node in nodeList )
                {
                    nodeTab.AppendNode( node, true, 0 );
                }