Index: /tags/ipp-ps1-20210510/ippconfig/recipes/ppSub.config
===================================================================
--- /tags/ipp-ps1-20210510/ippconfig/recipes/ppSub.config	(revision 41634)
+++ /tags/ipp-ps1-20210510/ippconfig/recipes/ppSub.config	(revision 41635)
@@ -17,5 +17,5 @@
 NORM.FRAC	F32	0.02		# Fraction of window for normalisation window
 COVAR.FRAC	F32	0.01		# Fraction of kernel to truncate before calculating covariance
-APPLY.PIXELNAN	BOOL	FALSE		# Apply NAN'ing of pixels underneath masks
+APPLY.PIXELNAN	BOOL	TRUE		# Apply NAN'ing of pixels underneath masks
 
 MASK.VAL	STR	MASK.VALUE,CONV.BAD	# Mask value for input