Index: io_dsn.pup
===================================================================
--- io_dsn.pup	(revision 35243)
+++ io_dsn.pup	(revision 35244)
@@ -6,7 +6,7 @@
 $fmt-feature-r dsn board
 $fmt-feature-r specctra .dsn (route result: wires and vias)
 $fmt-feature-r specctra .ses (route result: wires and vias)
-$fmt-feature-w dsn board
+$fmt-feature-w specctra dsn board
 $package io-alien
 dep lib_gensexpr
 dep lib_netmap