Index: src_plugins/dialogs/dlg_pref.c
===================================================================
--- src_plugins/dialogs/dlg_pref.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref.c	(revision 35842)
@@ -442,9 +442,7 @@
 	if (!pref_ctx.active)
 		return;
 
-	pref_sizes_brd2dlg(ctx);
-	pref_board_brd2dlg(ctx);
-	pref_color_brd2dlg(ctx);
+	call_hook(ctx, board_changed_cb);
 	pref_win_brd2dlg(ctx);
 }
 
@@ -454,9 +452,7 @@
 	if (!pref_ctx.active)
 		return;
 
-	pref_sizes_brd2dlg(ctx);
-	pref_board_brd2dlg(ctx);
-	pref_color_brd2dlg(ctx);
+	call_hook(ctx, meta_changed_cb);
 	pref_win_brd2dlg(ctx);
 }
 
Index: src_plugins/dialogs/dlg_pref.h
===================================================================
--- src_plugins/dialogs/dlg_pref.h	(revision 35841)
+++ src_plugins/dialogs/dlg_pref.h	(revision 35842)
@@ -31,6 +31,9 @@
 	void (*close_cb)(pref_ctx_t *ctx);  /* called from the dialog box is close_cb event */
 	void (*create_cb)(pref_ctx_t *ctx); /* called while the dialog box is being created: create widgets in current tab */
 
+	void (*board_changed_cb)(pref_ctx_t *ctx); /* called if the board got replaced (e.g. new board loaded) */
+	void (*meta_changed_cb)(pref_ctx_t *ctx);  /* called if the board metadata changed */
+
 	void (*spare_f1)(); void (*spare_f2)(); void (*spare_f3)(); void (*spare_f4)();
 	void *spare_p1, *spare_p2, *spare_p3, *spare_p4;
 	long spare_l1, spare_l2, spare_l3, spare_l4;
Index: src_plugins/dialogs/dlg_pref_board.c
===================================================================
--- src_plugins/dialogs/dlg_pref_board.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref_board.c	(revision 35842)
@@ -102,7 +102,8 @@
 static const Rnd_pref_tab_hook_t pref_board = {
 	"Board meta",
 	NULL, NULL,
-	pcb_dlg_pref_board_create
+	pcb_dlg_pref_board_create,
+	pref_board_brd2dlg, pref_board_brd2dlg  /* board change, meta change */
 };
 
 static void pcb_dlg_pref_board_init(pref_ctx_t *ctx, int tab)
Index: src_plugins/dialogs/dlg_pref_color.c
===================================================================
--- src_plugins/dialogs/dlg_pref_color.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref_color.c	(revision 35842)
@@ -171,7 +171,8 @@
 static const Rnd_pref_tab_hook_t pref_color = {
 	"Colors",
 	pcb_dlg_pref_color_open, pcb_dlg_pref_color_close,
-	pcb_dlg_pref_color_create
+	pcb_dlg_pref_color_create,
+	pref_color_brd2dlg, pref_color_brd2dlg  /* board change, meta change */
 };
 
 static void pcb_dlg_pref_color_init(pref_ctx_t *ctx, int tab)
Index: src_plugins/dialogs/dlg_pref_general.c
===================================================================
--- src_plugins/dialogs/dlg_pref_general.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref_general.c	(revision 35842)
@@ -95,7 +95,8 @@
 static const Rnd_pref_tab_hook_t pref_general = {
 	"General",
 	NULL, pcb_dlg_pref_general_close,
-	pcb_dlg_pref_general_create
+	pcb_dlg_pref_general_create,
+	NULL, NULL
 };
 
 static void pcb_dlg_pref_general_init(pref_ctx_t *ctx, int tab)
Index: src_plugins/dialogs/dlg_pref_layer.c
===================================================================
--- src_plugins/dialogs/dlg_pref_layer.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref_layer.c	(revision 35842)
@@ -63,7 +63,8 @@
 static const Rnd_pref_tab_hook_t pref_layer = {
 	"Layers",
 	NULL, NULL,
-	pcb_dlg_pref_layer_create
+	pcb_dlg_pref_layer_create,
+	NULL, NULL
 };
 
 static void pcb_dlg_pref_layer_init(pref_ctx_t *ctx, int tab)
Index: src_plugins/dialogs/dlg_pref_lib.c
===================================================================
--- src_plugins/dialogs/dlg_pref_lib.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref_lib.c	(revision 35842)
@@ -470,7 +470,8 @@
 static const Rnd_pref_tab_hook_t pref_lib = {
 	"Library",
 	pcb_dlg_pref_lib_open, pcb_dlg_pref_lib_close,
-	pcb_dlg_pref_lib_create
+	pcb_dlg_pref_lib_create,
+	NULL, NULL
 };
 
 void pcb_dlg_pref_lib_init(pref_ctx_t *ctx, int tab)
Index: src_plugins/dialogs/dlg_pref_sizes.c
===================================================================
--- src_plugins/dialogs/dlg_pref_sizes.c	(revision 35841)
+++ src_plugins/dialogs/dlg_pref_sizes.c	(revision 35842)
@@ -160,7 +160,8 @@
 static const Rnd_pref_tab_hook_t pref_sizes = {
 	"Sizes & DRC",
 	NULL, pcb_dlg_pref_sizes_close,
-	pcb_dlg_pref_sizes_create
+	pcb_dlg_pref_sizes_create,
+	pref_sizes_brd2dlg, pref_sizes_brd2dlg  /* board change, meta change */
 };
 
 static void pcb_dlg_pref_sizes_init(pref_ctx_t *ctx, int tab)