Index: trunk/ippScripts/scripts/detrend_stack.pl
===================================================================
--- trunk/ippScripts/scripts/detrend_stack.pl	(revision 18056)
+++ trunk/ippScripts/scripts/detrend_stack.pl	(revision 18065)
@@ -90,14 +90,16 @@
 
 # The output file rule name depends on the detrend type
-my $FILERULES = { 'FLATMASK' => 'PPMERGE.OUTPUT.MASK',
-                  'DARKMASK' => 'PPMERGE.OUTPUT.MASK',
-                  'MASK'     => 'PPMERGE.OUTPUT.MASK',
-                  'BIAS'     => 'PPMERGE.OUTPUT.BIAS',
-                  'DARK'     => 'PPMERGE.OUTPUT.DARK',
-                  'SHUTTER'  => 'PPMERGE.OUTPUT.SHUTTER',
-                  'FLAT'     => 'PPMERGE.OUTPUT.FLAT',
-                  'DOMEFLAT' => 'PPMERGE.OUTPUT.FLAT',
-                  'SKYFLAT'  => 'PPMERGE.OUTPUT.FLAT',
-                  'FRINGE'   => 'PPMERGE.OUTPUT.FRINGE',
+my $FILERULES = { 'FLATMASK'     => 'PPMERGE.OUTPUT.MASK',
+                  'DARKMASK'     => 'PPMERGE.OUTPUT.MASK',
+                  'MASK'         => 'PPMERGE.OUTPUT.MASK',
+                  'BIAS'         => 'PPMERGE.OUTPUT.BIAS',
+                  'DARK'         => 'PPMERGE.OUTPUT.DARK',
+                  'DARK_PREMASK' => 'PPMERGE.OUTPUT.DARK',
+                  'SHUTTER'      => 'PPMERGE.OUTPUT.SHUTTER',
+                  'FLAT'         => 'PPMERGE.OUTPUT.FLAT',
+                  'FLAT_PREMASK' => 'PPMERGE.OUTPUT.FLAT',
+                  'DOMEFLAT'     => 'PPMERGE.OUTPUT.FLAT',
+                  'SKYFLAT'      => 'PPMERGE.OUTPUT.FLAT',
+                  'FRINGE'       => 'PPMERGE.OUTPUT.FRINGE',
               };
 my $output_filerule = $FILERULES->{$det_type}; # File rule for output