Index: trunk/psModules/src/imcombine/pmSubtractionIO.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionIO.c	(revision 23374)
+++ trunk/psModules/src/imcombine/pmSubtractionIO.c	(revision 23378)
@@ -544,10 +544,4 @@
         return true;
     }
-    if (file->fileLevel != PM_FPA_LEVEL_FPA) {
-        return true;
-    }
-    if (file->fpa->chips->n == 1) {
-        return true;
-    }
 
     // find the FPA phu