Index: trunk/src/netlist_act.c
===================================================================
--- trunk/src/netlist_act.c	(revision 38233)
+++ trunk/src/netlist_act.c	(revision 38234)
@@ -719,7 +719,7 @@
 			}
 			break;
 		case F_Remove:
-			TODO("back annotate breaking connections of the given subc");
+			rats_patch_break_subc_conns(pcb, subc, undoable);
 			return rats_patch_del_subc(pcb, subc, undoable);
 		default:
 			rnd_message(RND_MSG_ERROR, "BaSubc(): invalid second argument\n");
Index: trunk/src/rats_patch.c
===================================================================
--- trunk/src/rats_patch.c	(revision 38233)
+++ trunk/src/rats_patch.c	(revision 38234)
@@ -520,8 +520,28 @@
 	return 0;
 }
 
+void rats_patch_break_subc_conns(pcb_board_t *pcb, pcb_subc_t *subc, int undoable)
+{
+	pcb_netlist_t *netlist = &pcb->netlist[PCB_NETLIST_EDITED];
+	htsp_entry_t *e;
 
+	for(e = htsp_first(netlist); e != NULL; e = htsp_next(netlist, e)) {
+		pcb_net_t *net = e->value;
+		pcb_net_term_t *term, *next;
+		for(term = pcb_termlist_first(&net->conns); term != NULL; term = next) {
+			next = pcb_termlist_next(term);
+			if (strcmp(term->refdes, subc->refdes) == 0) {
+				char *pinname = rnd_strdup_printf("%s-%s", term->refdes, term->term);
+				pcb_ratspatch_append_optimize(pcb, RATP_DEL_CONN, pinname, net->name, NULL);
+				pcb_net_term_del(net, term);
+				free(pinname);
+			}
+		}
+	}
+}
 
+
+
 /**** export ****/
 
 int pcb_rats_patch_export(pcb_board_t *pcb, pcb_ratspatch_line_t *pat, rnd_bool need_info_lines, void (*cb)(void *ctx, pcb_rats_patch_export_ev_t ev, const char *netn, const char *key, const char *val), void *ctx)
Index: trunk/src/rats_patch.h
===================================================================
--- trunk/src/rats_patch.h	(revision 38233)
+++ trunk/src/rats_patch.h	(revision 38234)
@@ -93,6 +93,10 @@
    netlist. Returns 0 on sucess.*/
 int rats_patch_del_subc(pcb_board_t *pcb, pcb_subc_t *subc, int undoable);
 
+/* Back annotate removal of all connections of a subc */
+void rats_patch_break_subc_conns(pcb_board_t *pcb, pcb_subc_t *subc, int undoable);
+
+
 /**** exporter ****/
 
 typedef enum pcb_ratspatch_fmt_e {