Index: src_plugins/rbs_routing/map.c
===================================================================
--- src_plugins/rbs_routing/map.c	(revision 38749)
+++ src_plugins/rbs_routing/map.c	(revision 38750)
@@ -172,6 +172,7 @@
 	a = grbs_arc_new(&rbs->grbs, pt, 0, 0, 0, 0);
 	gdl_append(&tn->arcs, a, link_2net);
 	a->user_data = obj;
+	a->in_use = 1;
 
 	bind_prev_line(rbs, prevarc, prevline, a);
 
@@ -233,6 +234,7 @@
 			a = grbs_arc_new(&rbs->grbs, pt, 0, 0, 0, 0);
 			gdl_append(&tn->arcs, a, link_2net);
 			a->user_data = obj;
+			a->in_use = 1;
 
 			bind_prev_line(rbs, prevarc, prevline, a);
 			break;