Index: trunk/src/buffer.c
===================================================================
--- trunk/src/buffer.c	(revision 28892)
+++ trunk/src/buffer.c	(revision 28893)
@@ -77,6 +77,7 @@
 	NULL,
 	pcb_subcop_add_to_buffer,
 	pcb_pstkop_add_to_buffer,
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t MoveBufferFunctions = {
@@ -92,6 +93,7 @@
 	NULL,
 	pcb_subcop_move_buffer,
 	pcb_pstkop_move_buffer,
+	0 /* extobj_inhibit_regen */
 };
 
 static int move_buffer_pre(pcb_opctx_t *ctx, pcb_any_obj_t *obj, void *ptr3)
Index: trunk/src/change.c
===================================================================
--- trunk/src/change.c	(revision 28892)
+++ trunk/src/change.c	(revision 28893)
@@ -67,7 +67,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_size,
-	pcb_pstkop_change_size
+	pcb_pstkop_change_size,
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t Change1stSizeFunctions = {
@@ -82,7 +83,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_1st_size,
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t Change2ndSizeFunctions = {
@@ -97,7 +99,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_2nd_size,
-	pcb_pstkop_change_2nd_size
+	pcb_pstkop_change_2nd_size,
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t ChangeRotFunctions = {
@@ -112,7 +115,8 @@
 	NULL,
 	NULL,
 	NULL,
-	pcb_pstkop_rotate
+	pcb_pstkop_rotate,
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ChangeThermalFunctions = {
@@ -127,7 +131,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	pcb_pstkop_change_thermal
+	pcb_pstkop_change_thermal,
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t ChangeClearSizeFunctions = {
@@ -142,7 +147,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_clear_size,
-	pcb_pstkop_change_clear_size
+	pcb_pstkop_change_clear_size,
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ChangeNameFunctions = {
@@ -157,7 +163,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_name,
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ChangeNonetlistFunctions = {
@@ -172,7 +179,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_nonetlist,
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ChangeJoinFunctions = {
@@ -187,7 +195,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t SetJoinFunctions = {
@@ -202,7 +211,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ClrJoinFunctions = {
@@ -217,7 +227,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ChangeRadiusFunctions = {
@@ -232,7 +243,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t ChangeAngleFunctions = {
@@ -247,7 +259,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t ChgFlagFunctions = {
@@ -262,7 +275,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_flag,
-	pcb_pstkop_change_flag
+	pcb_pstkop_change_flag,
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t InvalLabelFunctions = {
@@ -277,7 +291,8 @@
 	NULL,
 	NULL,
 	/*pcb_subcop_invalidate_flag*/ NULL,
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 
Index: trunk/src/insert.c
===================================================================
--- trunk/src/insert.c	(revision 28892)
+++ trunk/src/insert.c	(revision 28893)
@@ -55,7 +55,8 @@
 	pcb_ratop_insert_point,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL,  /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 void *pcb_insert_point_in_object(int Type, void *Ptr1, void *Ptr2, pcb_cardinal_t * Ptr3, pcb_coord_t DX, pcb_coord_t DY, pcb_bool Force, pcb_bool insert_last)
Index: trunk/src/move.c
===================================================================
--- trunk/src/move.c	(revision 28892)
+++ trunk/src/move.c	(revision 28893)
@@ -61,7 +61,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_move,
-	pcb_pstkop_move
+	pcb_pstkop_move,
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t MoveFunctions_noclip = {
@@ -76,7 +77,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	pcb_pstkop_move_noclip
+	pcb_pstkop_move_noclip,
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t ClipFunctions = {
@@ -91,7 +93,8 @@
 	NULL,
 	NULL,
 	NULL, /* subc */
-	pcb_pstkop_clip
+	pcb_pstkop_clip,
+	1 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t MoveToLayerFunctions = {
@@ -106,7 +109,8 @@
 	pcb_ratop_move_to_layer,
 	NULL,
 	NULL, /* subc */
-	NULL  /* padstack */
+	NULL, /* padstack */
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t CopyFunctions = {
@@ -121,7 +125,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_copy,
-	pcb_pstkop_copy
+	pcb_pstkop_copy,
+	0 /* extobj_inhibit_regen */
 };
 
 
Index: trunk/src/operation.c
===================================================================
--- trunk/src/operation.c	(revision 28892)
+++ trunk/src/operation.c	(revision 28893)
@@ -42,7 +42,7 @@
  */
 void *pcb_object_operation(pcb_opfunc_t *F, pcb_opctx_t *ctx, int Type, void *Ptr1, void *Ptr2, void *Ptr3)
 {
-	pcb_any_obj_t *res = NULL, *exto;
+	pcb_any_obj_t *res = NULL, *exto = NULL;
 
 	if (F->common_pre != NULL) {
 		if (F->common_pre(ctx, Ptr2, Ptr3) == 1)
@@ -49,7 +49,8 @@
 			return NULL;
 	}
 
-	exto = pcb_extobj_float_pre(Ptr2);
+	if (!F->extobj_inhibit_regen)
+		exto = pcb_extobj_float_pre(Ptr2);
 
 	switch (Type) {
 		case PCB_OBJ_LINE:
@@ -141,7 +142,10 @@
 			}
 			if (F->common_pre != NULL)
 				if (F->common_pre(ctx, (pcb_any_obj_t *)line, NULL) == 1) continue;
-			exto = pcb_extobj_float_pre((pcb_any_obj_t *)line);
+			if (F->extobj_inhibit_regen)
+				exto = NULL;
+			else
+				exto = pcb_extobj_float_pre((pcb_any_obj_t *)line);
 			F->Line(ctx, layer, line);
 			if (exto != NULL) pcb_extobj_float_geo(exto);
 			if (F->common_post != NULL) F->common_post(ctx, (pcb_any_obj_t *)line, NULL);
@@ -164,7 +168,10 @@
 			}
 			if (F->common_pre != NULL)
 				if (F->common_pre(ctx, (pcb_any_obj_t *)arc, NULL) == 1) continue;
-			exto = pcb_extobj_float_pre((pcb_any_obj_t *)arc);
+			if (F->extobj_inhibit_regen)
+				exto = NULL;
+			else
+				exto = pcb_extobj_float_pre((pcb_any_obj_t *)arc);
 			F->Arc(ctx, layer, arc);
 			if (exto != NULL) pcb_extobj_float_geo(exto);
 			if (F->common_post != NULL) F->common_post(ctx, (pcb_any_obj_t *)arc, NULL);
@@ -187,7 +194,10 @@
 			}
 			if (F->common_pre != NULL)
 				if (F->common_pre(ctx, (pcb_any_obj_t *)text, NULL) == 1) continue;
-			exto = pcb_extobj_float_pre((pcb_any_obj_t *)text);
+			if (F->extobj_inhibit_regen)
+				exto = NULL;
+			else
+				exto = pcb_extobj_float_pre((pcb_any_obj_t *)text);
 			F->Text(ctx, layer, text);
 			if (exto != NULL) pcb_extobj_float_geo(exto);
 			if (F->common_post != NULL) F->common_post(ctx, (pcb_any_obj_t *)text, NULL);
@@ -210,7 +220,10 @@
 			}
 			if (F->common_pre != NULL)
 				if (F->common_pre(ctx, (pcb_any_obj_t *)polygon, NULL) == 1) continue;
-			exto = pcb_extobj_float_pre((pcb_any_obj_t *)polygon);
+			if (F->extobj_inhibit_regen)
+				exto = NULL;
+			else
+				exto = pcb_extobj_float_pre((pcb_any_obj_t *)polygon);
 			F->Polygon(ctx, layer, polygon);
 			if (exto != NULL) pcb_extobj_float_geo(exto);
 			if (F->common_post != NULL) F->common_post(ctx, (pcb_any_obj_t *)polygon, NULL);
@@ -231,7 +244,10 @@
 				}
 				if (F->common_pre != NULL)
 					if (F->common_pre(ctx, (pcb_any_obj_t *)subc, NULL) == 1) continue;
-				exto = pcb_extobj_float_pre((pcb_any_obj_t *)subc);
+				if (F->extobj_inhibit_regen)
+					exto = NULL;
+				else
+					exto = pcb_extobj_float_pre((pcb_any_obj_t *)subc);
 				F->subc(ctx, subc);
 				if (exto != NULL) pcb_extobj_float_geo(exto);
 				if (F->common_post != NULL) F->common_post(ctx, (pcb_any_obj_t *)subc, NULL);
@@ -259,7 +275,10 @@
 			}
 			if (F->common_pre != NULL)
 				if (F->common_pre(ctx, (pcb_any_obj_t *)padstack, NULL) == 1) continue;
-			exto = pcb_extobj_float_pre((pcb_any_obj_t *)padstack);
+			if (F->extobj_inhibit_regen)
+				exto = NULL;
+			else
+				exto = pcb_extobj_float_pre((pcb_any_obj_t *)padstack);
 			F->padstack(ctx, padstack);
 			if (exto != NULL) pcb_extobj_float_geo(exto);
 			if (F->common_post != NULL) F->common_post(ctx, (pcb_any_obj_t *)padstack, NULL);
Index: trunk/src/operation.h
===================================================================
--- trunk/src/operation.h	(revision 28892)
+++ trunk/src/operation.h	(revision 28893)
@@ -153,6 +153,8 @@
 	void *(*ArcPoint)(pcb_opctx_t *ctx, pcb_layer_t *, pcb_arc_t *, int *end_id);
 	void *(*subc)(pcb_opctx_t *ctx, pcb_subc_t *);
 	void *(*padstack)(pcb_opctx_t *ctx, pcb_pstk_t *);
+
+	unsigned int extobj_inhibit_regen:1;
 } pcb_opfunc_t;
 
 void *pcb_object_operation(pcb_opfunc_t *F, pcb_opctx_t *ctx, int Type, void *Ptr1, void *Ptr2, void *Ptr3);
Index: trunk/src/remove.c
===================================================================
--- trunk/src/remove.c	(revision 28892)
+++ trunk/src/remove.c	(revision 28893)
@@ -56,7 +56,8 @@
 	pcb_ratop_remove,
 	pcb_arcop_remove_point,
 	pcb_subcop_remove,
-	pcb_pstkop_remove
+	pcb_pstkop_remove,
+	0 /* extobj_inhibit_regen */
 };
 
 static pcb_opfunc_t DestroyFunctions = {
@@ -72,6 +73,7 @@
 	NULL,
 	pcb_subcop_destroy,
 	pcb_pstkop_destroy,
+	0 /* extobj_inhibit_regen */
 };
 
 static int remove_pre(pcb_opctx_t *ctx, pcb_any_obj_t *obj, void *ptr3)
Index: trunk/src/rotate.c
===================================================================
--- trunk/src/rotate.c	(revision 28892)
+++ trunk/src/rotate.c	(revision 28893)
@@ -63,7 +63,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_rotate90,
-	pcb_pstkop_rotate90
+	pcb_pstkop_rotate90,
+	0 /* extobj_inhibit_regen */
 };
 
 pcb_opfunc_t RotateFunctions = {
@@ -78,7 +79,8 @@
 	NULL,
 	NULL,
 	pcb_subcop_rotate,
-	pcb_pstkop_rotate
+	pcb_pstkop_rotate,
+	0 /* extobj_inhibit_regen */
 };
 
 /* ---------------------------------------------------------------------------