Index: trunk/ppImage/src/ppImageReplaceBackground.c
===================================================================
--- trunk/ppImage/src/ppImageReplaceBackground.c	(revision 18255)
+++ trunk/ppImage/src/ppImageReplaceBackground.c	(revision 18556)
@@ -40,6 +40,7 @@
     psAssert (replaceSkyMode != MODE_NONE, "replace sky mode not defined");
 
-    // define the mask value to be used in ppImage
-    psMaskType maskVal  = options->satMask | options->badMask | options->flatMask | options->blankMask;
+    // XXX Should this be options->maskValue or & ~options->satMask? the latter will leave saturated pixels high
+    // psMaskType maskVal  = options->maskValue & ~options->satMask;
+    psMaskType maskVal  = options->maskValue;
 
     pmFPAfile *modelFile = NULL;