Index: trunk/src_plugins/io_tedax/tdrc_query.c
===================================================================
--- trunk/src_plugins/io_tedax/tdrc_query.c	(revision 31513)
+++ trunk/src_plugins/io_tedax/tdrc_query.c	(revision 31514)
@@ -44,6 +44,12 @@
 #define RULEMOD "DrcQueryRuleMod"
 #define DEFMOD "DrcQueryDefMod"
 
+int tedax_drc_query_rule_clear(pcb_board_t *pcb, const char *target_src)
+{
+	rnd_actionva(&pcb->hidlib, RULEMOD, "set", "clear", target_src, NULL);
+	rnd_actionva(&pcb->hidlib, DEFMOD, "set", "clear", target_src, NULL);
+}
+
 int tedax_drc_query_rule_parse(pcb_board_t *pcb, FILE *f, const char *src, char *rule_name)
 {
 	int argc;
Index: trunk/src_plugins/io_tedax/tdrc_query.h
===================================================================
--- trunk/src_plugins/io_tedax/tdrc_query.h	(revision 31513)
+++ trunk/src_plugins/io_tedax/tdrc_query.h	(revision 31514)
@@ -6,3 +6,6 @@
 
 int tedax_drc_query_save(pcb_board_t *pcb, const char *ruleid, const char *fn);
 int tedax_drc_query_rule_fsave(pcb_board_t *pcb, const char *ruleid, FILE *f, rnd_bool save_def);
+
+/* clear all rules and defs with source matching target_src */
+int tedax_drc_query_rule_clear(pcb_board_t *pcb, const char *target_src);
Index: trunk/src_plugins/io_tedax/tnetlist.c
===================================================================
--- trunk/src_plugins/io_tedax/tnetlist.c	(revision 31513)
+++ trunk/src_plugins/io_tedax/tnetlist.c	(revision 31514)
@@ -279,6 +279,7 @@
 
 	ret = tedax_net_fload(fn, import_fp, NULL, silent);
 	rewind(fn);
+	tedax_drc_query_rule_clear(PCB, "netlist");
 	ret |= tedax_drc_query_fload(PCB, fn, NULL, "netlist", silent);
 
 	fclose(fn);