Index: trunk/src/obj_subc.c
===================================================================
--- trunk/src/obj_subc.c	(revision 31845)
+++ trunk/src/obj_subc.c	(revision 31846)
@@ -868,12 +868,12 @@
 }
 
 
-pcb_subc_t *pcb_subc_dup_at(pcb_board_t *pcb, pcb_data_t *dst, const pcb_subc_t *src, rnd_coord_t dx, rnd_coord_t dy, rnd_bool keep_ids)
+pcb_subc_t *pcb_subc_dup_at(pcb_board_t *pcb, pcb_data_t *dst, const pcb_subc_t *src, rnd_coord_t dx, rnd_coord_t dy, rnd_bool keep_ids, rnd_bool undoable)
 {
 	pcb_board_t *src_pcb;
 	int n;
 	pcb_subc_t *sc = pcb_subc_alloc();
-	int undoable_psproto = dst->parent_type == PCB_PARENT_BOARD;
+	int undoable_psproto = (undoable && (dst->parent_type == PCB_PARENT_BOARD));
 
 	if (keep_ids)
 		sc->ID = src->ID;
@@ -1055,7 +1055,7 @@
 
 pcb_subc_t *pcb_subc_dup(pcb_board_t *pcb, pcb_data_t *dst, pcb_subc_t *src)
 {
-	return pcb_subc_dup_at(pcb, dst, src, 0, 0, rnd_false);
+	return pcb_subc_dup_at(pcb, dst, src, 0, 0, rnd_false, rnd_true);
 }
 
 void pcb_subc_bbox(pcb_subc_t *sc)
@@ -1210,7 +1210,7 @@
 {
 	pcb_subc_t *sc;
 
-	sc = pcb_subc_dup_at(PCB, PCB->Data, src, ctx->copy.DeltaX, ctx->copy.DeltaY, ctx->copy.keep_id);
+	sc = pcb_subc_dup_at(PCB, PCB->Data, src, ctx->copy.DeltaX, ctx->copy.DeltaY, ctx->copy.keep_id, rnd_true);
 
 	pcb_undo_add_obj_to_create(PCB_OBJ_SUBC, sc, sc, sc);
 
@@ -1582,7 +1582,7 @@
 void *pcb_subcop_add_to_buffer(pcb_opctx_t *ctx, pcb_subc_t *sc)
 {
 	pcb_subc_t *nsc;
-	nsc = pcb_subc_dup_at(NULL, ctx->buffer.dst, sc, 0, 0, ctx->buffer.keep_id);
+	nsc = pcb_subc_dup_at(NULL, ctx->buffer.dst, sc, 0, 0, ctx->buffer.keep_id, rnd_true);
 
 	if (ctx->buffer.extraflg & PCB_FLAG_SELECTED) {
 		pcb_undo_freeze_serial();
@@ -2356,7 +2356,7 @@
 	}
 
 
-	placed = pcb_subc_dup_at(pcb, data, src, ox - osx, oy - osy, 0);
+	placed = pcb_subc_dup_at(pcb, data, src, ox - osx, oy - osy, 0, rnd_true);
 	pcb_subc_get_side(placed, &src_on_bottom);
 
 	{ /* copy attributes */
Index: trunk/src/obj_subc.h
===================================================================
--- trunk/src/obj_subc.h	(revision 31845)
+++ trunk/src/obj_subc.h	(revision 31846)
@@ -193,7 +193,7 @@
 /* Copy non-layer, non-geometrical metadata (e.g. attributes) */
 pcb_subc_t *pcb_subc_copy_meta(pcb_subc_t *dst, const pcb_subc_t *src);
 
-pcb_subc_t *pcb_subc_dup_at(pcb_board_t *pcb, pcb_data_t *dst, const pcb_subc_t *src, rnd_coord_t dx, rnd_coord_t dy, rnd_bool keep_ids);
+pcb_subc_t *pcb_subc_dup_at(pcb_board_t *pcb, pcb_data_t *dst, const pcb_subc_t *src, rnd_coord_t dx, rnd_coord_t dy, rnd_bool keep_ids, rnd_bool undoable);
 
 /* Replace dst with a copy of src in place (preserving location and orientation
    and attributes. If add_undo is true, add the old subc del and the new subc
Index: trunk/src_plugins/dialogs/dlg_library.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_library.c	(revision 31845)
+++ trunk/src_plugins/dialogs/dlg_library.c	(revision 31846)
@@ -150,7 +150,7 @@
 
 	gds_init(&tmp);
 	if (sc != NULL) {
-		ctx->sc = pcb_subc_dup_at(ctx->prev_pcb, ctx->prev_pcb->Data, sc, 0, 0, 1);
+		ctx->sc = pcb_subc_dup_at(ctx->prev_pcb, ctx->prev_pcb->Data, sc, 0, 0, 1, rnd_false);
 		pcb_data_bbox(&bbox, ctx->sc->data, 0);
 		rnd_dad_preview_zoomto(&ctx->dlg[ctx->wpreview], &bbox);
 	}
Index: trunk/src_plugins/export_xy/xy.c
===================================================================
--- trunk/src_plugins/export_xy/xy.c	(revision 31845)
+++ trunk/src_plugins/export_xy/xy.c	(revision 31846)
@@ -300,7 +300,7 @@
 			return;
 		}
 		
-		sc_rot0 = pcb_subc_dup_at(NULL, tmp, ctx->subc, 0, 0, 0);
+		sc_rot0 = pcb_subc_dup_at(NULL, tmp, ctx->subc, 0, 0, 0, rnd_false);
 		ang = ctx->theta / RND_RAD_TO_DEG;
 		pcb_subc_rotate(sc_rot0, 0, 0, cos(ang), sin(ang), ctx->theta);
 
Index: trunk/src_plugins/io_dsn/read.c
===================================================================
--- trunk/src_plugins/io_dsn/read.c	(revision 31845)
+++ trunk/src_plugins/io_dsn/read.c	(revision 31846)
@@ -1564,7 +1564,7 @@
 			return -1;
 		}
 
-		nsc = pcb_subc_dup_at(ctx->pcb, ctx->pcb->Data, subc, crd[0], crd[1], 0);
+		nsc = pcb_subc_dup_at(ctx->pcb, ctx->pcb->Data, subc, crd[0], crd[1], 0, rnd_false);
 		rnd_attribute_put(&nsc->Attributes, "refdes", refdes);
 
 		if (mirror_first) {
Index: trunk/src_plugins/io_eagle/read.c
===================================================================
--- trunk/src_plugins/io_eagle/read.c	(revision 31845)
+++ trunk/src_plugins/io_eagle/read.c	(revision 31846)
@@ -1438,7 +1438,7 @@
 				back = 1;
 			}
 
-			new_subc = pcb_subc_dup_at(st->pcb, st->pcb->Data, subc, x, y, rnd_false);
+			new_subc = pcb_subc_dup_at(st->pcb, st->pcb->Data, subc, x, y, rnd_false, rnd_false);
 			new_subc->Flags = pcb_no_flags();
 			new_subc->ID = pcb_create_ID_get();
 
Index: trunk/src_plugins/lib_netmap/placement.c
===================================================================
--- trunk/src_plugins/lib_netmap/placement.c	(revision 31845)
+++ trunk/src_plugins/lib_netmap/placement.c	(revision 31846)
@@ -48,7 +48,7 @@
 		if (!htscp_has(&ctx->subcs, subc)) {
 			pcb_host_trans_t tr;
 			pcb_data_t *oldhack;
-			pcb_subc_t *proto = pcb_subc_dup_at(ctx->pcb, &ctx->data, subc, 0, 0, 0); /* do not keep IDs because that fools pstk parent logic */
+			pcb_subc_t *proto = pcb_subc_dup_at(ctx->pcb, &ctx->data, subc, 0, 0, 0, rnd_true); /* do not keep IDs because that fools pstk parent logic */
 			pcb_subc_get_host_trans(subc, &tr, 1);
 
 			oldhack = pcb_pstk_data_hack;