Always create the line, since root nodes may now be reused as non-root nodes
Always create the line, since root nodes may now be reused as non-root nodes

fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID,htem/CATMAID,htem/CATMAID,fzadow/CATMAID,fzadow/CATMAID,htem/CATMAID