Index: trunk/src_plugins/dialogs/dlg_library_param.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_library_param.c	(revision 31878)
+++ trunk/src_plugins/dialogs/dlg_library_param.c	(revision 31879)
@@ -306,7 +306,7 @@
 		const char *val;
 		rnd_hid_attribute_t *a = &ctx->pdlg[ctx->pwid[n]];
 
-		if ((!a->changed) || (a->empty))
+		if ((n >= ctx->first_optional) && ((!a->changed) || (a->empty)))
 			continue;
 
 		switch(a->type) {