diff --git a/parm/metplus/GridStat_REFC.conf b/parm/metplus/GridStat_REFC.conf
index a4e8e76814..c5b1611dea 100644
--- a/parm/metplus/GridStat_REFC.conf
+++ b/parm/metplus/GridStat_REFC.conf
@@ -181,15 +181,6 @@ FCST_IS_PROB = False
 FCST_GRID_STAT_PROB_THRESH = ==0.1
 
 GRID_STAT_OUTPUT_PREFIX = {MODEL}_{{fieldname_in_met_filedir_names}}_{OBTYPE}
-##
-## Set to true if observation data is probabilistic.  Only used if
-## configuring forecast data as the 'OBS' input.
-##
-#OBS_IS_PROB = false
-##
-## Only used if OBS_IS_PROB is true - sets probabilistic threshold.
-##
-#OBS_GRID_STAT_PROB_THRESH = ==0.1
 
 # Climatology data
 #GRID_STAT_CLIMO_MEAN_FILE_NAME =
diff --git a/parm/metplus/GridStat_RETOP.conf b/parm/metplus/GridStat_RETOP.conf
index 3927724607..fbc074ccf8 100644
--- a/parm/metplus/GridStat_RETOP.conf
+++ b/parm/metplus/GridStat_RETOP.conf
@@ -183,15 +183,6 @@ FCST_IS_PROB = False
 FCST_GRID_STAT_PROB_THRESH = ==0.1
 
 GRID_STAT_OUTPUT_PREFIX = {MODEL}_{{fieldname_in_met_filedir_names}}_{OBTYPE}
-##
-## Set to true if observation data is probabilistic.  Only used if
-## configuring forecast data as the 'OBS' input.
-##
-#OBS_IS_PROB = false
-##
-## Only used if OBS_IS_PROB is true - sets probabilistic threshold.
-##
-#OBS_GRID_STAT_PROB_THRESH = ==0.1
 
 # Climatology data
 #GRID_STAT_CLIMO_MEAN_FILE_NAME =
diff --git a/parm/metplus/GridStat_ensmean_REFC.conf b/parm/metplus/GridStat_ensmean_REFC.conf
index 131e69a775..a24f564fa3 100644
--- a/parm/metplus/GridStat_ensmean_REFC.conf
+++ b/parm/metplus/GridStat_ensmean_REFC.conf
@@ -179,15 +179,6 @@ FCST_IS_PROB = False
 FCST_GRID_STAT_PROB_THRESH = ==0.1
 
 GRID_STAT_OUTPUT_PREFIX = {MODEL}_{{fieldname_in_met_filedir_names}}_{OBTYPE}
-##
-## Set to true if observation data is probabilistic.  Only used if
-## configuring forecast data as the 'OBS' input.
-##
-#OBS_IS_PROB = false
-##
-## Only used if OBS_IS_PROB is true - sets probabilistic threshold.
-##
-#OBS_GRID_STAT_PROB_THRESH = ==0.1
 
 # Climatology data
 #GRID_STAT_CLIMO_MEAN_FILE_NAME =
diff --git a/parm/metplus/GridStat_ensmean_RETOP.conf b/parm/metplus/GridStat_ensmean_RETOP.conf
index d9686afaf9..d8ea6ff131 100644
--- a/parm/metplus/GridStat_ensmean_RETOP.conf
+++ b/parm/metplus/GridStat_ensmean_RETOP.conf
@@ -181,15 +181,6 @@ FCST_IS_PROB = False
 FCST_GRID_STAT_PROB_THRESH = ==0.1
 
 GRID_STAT_OUTPUT_PREFIX = {MODEL}_{{fieldname_in_met_filedir_names}}_{OBTYPE}
-##
-## Set to true if observation data is probabilistic.  Only used if
-## configuring forecast data as the 'OBS' input.
-##
-#OBS_IS_PROB = false
-##
-## Only used if OBS_IS_PROB is true - sets probabilistic threshold.
-##
-#OBS_GRID_STAT_PROB_THRESH = ==0.1
 
 # Climatology data
 #GRID_STAT_CLIMO_MEAN_FILE_NAME =
diff --git a/parm/metplus/GridStat_ensprob_REFC.conf b/parm/metplus/GridStat_ensprob_REFC.conf
index 67aa2a9002..ca82866ee8 100644
--- a/parm/metplus/GridStat_ensprob_REFC.conf
+++ b/parm/metplus/GridStat_ensprob_REFC.conf
@@ -250,15 +250,6 @@ FCST_PROB_IN_GRIB_PDS = False
 FCST_GRID_STAT_PROB_THRESH = ==0.1
 
 GRID_STAT_OUTPUT_PREFIX = {MODEL}_{{fieldname_in_met_filedir_names}}_{OBTYPE}
-##
-## Set to true if observation data is probabilistic.  Only used if
-## configuring forecast data as the 'OBS' input.
-##
-#OBS_IS_PROB = false
-##
-## Only used if OBS_IS_PROB is true - sets probabilistic threshold.
-##
-#OBS_GRID_STAT_PROB_THRESH = ==0.1
 
 # Climatology data
 #GRID_STAT_CLIMO_MEAN_FILE_NAME =
diff --git a/parm/metplus/GridStat_ensprob_RETOP.conf b/parm/metplus/GridStat_ensprob_RETOP.conf
index 0d26b4d549..f4328e472b 100644
--- a/parm/metplus/GridStat_ensprob_RETOP.conf
+++ b/parm/metplus/GridStat_ensprob_RETOP.conf
@@ -258,15 +258,6 @@ FCST_PROB_IN_GRIB_PDS = False
 FCST_GRID_STAT_PROB_THRESH = ==0.1
 
 GRID_STAT_OUTPUT_PREFIX = {MODEL}_{{fieldname_in_met_filedir_names}}_{OBTYPE}
-##
-## Set to true if observation data is probabilistic.  Only used if
-## configuring forecast data as the 'OBS' input.
-##
-#OBS_IS_PROB = false
-##
-## Only used if OBS_IS_PROB is true - sets probabilistic threshold.
-##
-#OBS_GRID_STAT_PROB_THRESH = ==0.1
 
 # Climatology data
 #GRID_STAT_CLIMO_MEAN_FILE_NAME =