Index: trunk/src/data.c
===================================================================
--- trunk/src/data.c	(revision 11880)
+++ trunk/src/data.c	(revision 11881)
@@ -354,6 +354,16 @@
 	}
 }
 
+void pcb_data_binding_update(pcb_board_t *pcb, pcb_data_t *data)
+{
+	int i;
+	for(i = 0; i < data->LayerN; i++) {
+		pcb_layer_t *sourcelayer = &data->Layer[i];
+		pcb_layer_t *destlayer = pcb_layer_resolve_binding(pcb, sourcelayer);
+		sourcelayer->meta.bound.real = destlayer;
+	}
+}
+
 pcb_data_t *pcb_data_new(pcb_board_t *parent)
 {
 	pcb_data_t *data;
Index: trunk/src/data.h
===================================================================
--- trunk/src/data.h	(revision 11880)
+++ trunk/src/data.h	(revision 11881)
@@ -130,6 +130,9 @@
 /* Set up all data layers as bound layers to pcb's Data */
 void pcb_data_bind_board_layers(pcb_board_t *pcb, pcb_data_t *data, int share_rtrees);
 
+/* Recalculate the layer bindings updating meta.bound.real to new board layers */
+void pcb_data_binding_update(pcb_board_t *pcb, pcb_data_t *data);
+
 /* Make sure there are no negative coords in data, knowing the bbox of the data */
 int pcb_data_normalize_(pcb_data_t *data, pcb_box_t *data_bbox);