Index: trunk/src/layer_grp.c
===================================================================
--- trunk/src/layer_grp.c	(revision 31857)
+++ trunk/src/layer_grp.c	(revision 31858)
@@ -405,11 +405,6 @@
 	if (!force_end)
 	for(bl = stack->len; bl >= 0; bl--) {
 		if ((stack->grp[bl].ltype & PCB_LYT_BOTTOM) && (stack->grp[bl].ltype & PCB_LYT_COPPER)) {
-
-			/* insert a new internal layer: move existing layers to make room */
-			for(n = stack->len-1; n >= bl; n--)
-				pcb_layergrp_move_onto(pcb, n+room, n);
-			
 			pcb_get_grp_new_intern_insert(pcb, room, bl, omit_substrate);
 			return &stack->grp[bl];
 		}