Index: branches/eam_branches/20091201/psModules/src/imcombine/pmSubtraction.c
===================================================================
--- branches/eam_branches/20091201/psModules/src/imcombine/pmSubtraction.c	(revision 26743)
+++ branches/eam_branches/20091201/psModules/src/imcombine/pmSubtraction.c	(revision 26759)
@@ -423,4 +423,5 @@
                     *target |= maskBad;
                 } else if (*source & subConvPoor) {
+                    *target &= ~maskBad;
                     *target |= maskPoor;
                 } else {