diff --git a/parm/snow/obs/config/adpsfc_snow.yaml.j2 b/parm/snow/obs/config/adpsfc_snow.yaml.j2
index 628d81aef..026f01fae 100644
--- a/parm/snow/obs/config/adpsfc_snow.yaml.j2
+++ b/parm/snow/obs/config/adpsfc_snow.yaml.j2
@@ -6,7 +6,7 @@
     obsdatain:
       engine:
         type: H5File
-        obsfile: '{{ DATA }}/obs/{{ OPREFIX_OUT }}adpsfc_snow.nc4'
+        obsfile: '{{ DATA }}/obs/{{ OPREFIX }}adpsfc_snow.nc4'
     obsdataout:
       engine:
         type: H5File
diff --git a/parm/snow/obs/config/ims_snow.yaml.j2 b/parm/snow/obs/config/ims_snow.yaml.j2
index c7225d6e5..6fa427be7 100644
--- a/parm/snow/obs/config/ims_snow.yaml.j2
+++ b/parm/snow/obs/config/ims_snow.yaml.j2
@@ -6,7 +6,7 @@
     obsdatain:
       engine:
         type: H5File
-        obsfile: '{{ DATA }}/obs/{{ OPREFIX_OUT }}ims_snow.{{ CASE }}.nc4'
+        obsfile: '{{ DATA }}/obs/{{ OPREFIX }}ims_snow.nc4'
     obsdataout:
       engine:
         type: H5File
diff --git a/parm/snow/obs/config/snocvr_snow.yaml.j2 b/parm/snow/obs/config/snocvr_snow.yaml.j2
index dd3daf1a4..c6b872a48 100644
--- a/parm/snow/obs/config/snocvr_snow.yaml.j2
+++ b/parm/snow/obs/config/snocvr_snow.yaml.j2
@@ -6,7 +6,7 @@
     obsdatain:
       engine:
         type: H5File
-        obsfile: '{{ DATA }}/obs/{{ OPREFIX_OUT }}snocvr_snow.nc4'
+        obsfile: '{{ DATA }}/obs/{{ OPREFIX }}snocvr_snow.nc4'
     obsdataout:
       engine:
         type: H5File
diff --git a/parm/snow/prep/prep_gts.yaml.j2 b/parm/snow/prep/prep_gts.yaml.j2
index 297652534..a5e4915a3 100644
--- a/parm/snow/prep/prep_gts.yaml.j2
+++ b/parm/snow/prep/prep_gts.yaml.j2
@@ -2,17 +2,9 @@ gtsbufr:
   mkdir:
     - '{{ DATA }}/obs'
   copy:
-    - ['{{ COMIN_OBS }}/{{ OPREFIX_IN }}adpsfc.tm00.bufr_d', '{{ DATA }}/obs/']
+    - ['{{ COM_OBS }}/{{ OPREFIX }}adpsfc.tm00.bufr_d', '{{ DATA }}/obs/']
 gtsioda:
-  gfs:
-    copy:
-      - ['{{ DATA }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4', '{{ COMOUT_OBS }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4']
-  gdas:
-    copy:
-      - ['{{ DATA }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4', '{{ COMOUT_OBS }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4']
-  enkfgdas:
-    copy:
-      - ['{{ DATA }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4', '{{ COMOUT_OBS }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4']
-      - ['{{ COMIN_OBS }}/{{ OPREFIX_IN }}snocvr_snow.nc4', '{{ COMOUT_OBS }}/{{ OPREFIX_OUT }}snocvr_snow.nc4']
+  copy:
+    - ['{{ DATA }}/{{ OPREFIX }}adpsfc_snow.nc4', '{{ COM_OBS }}/{{ OPREFIX }}adpsfc_snow.nc4']
 bufr2ioda:
      adpsfc: '{{ HOMEgfs }}/sorc/gdas.cd/test/testinput/bufr_adpsfc_snow.yaml'
diff --git a/parm/snow/prep/prep_ims.yaml.j2 b/parm/snow/prep/prep_ims.yaml.j2
index 4c5497e5d..2757f6f06 100644
--- a/parm/snow/prep/prep_ims.yaml.j2
+++ b/parm/snow/prep/prep_ims.yaml.j2
@@ -2,9 +2,9 @@ calcfims:
   mkdir:
     - '{{ DATA }}/obs'
   copy:
-    - ['{{ COMIN_OBS }}/{{ OPREFIX_IN }}ims{{ current_cycle | to_julian }}_4km_v1.3.nc', '{{ DATA }}/obs/ims{{ current_cycle | to_julian }}_4km_v1.3.nc']
+    - ['{{ COM_OBS }}/{{ OPREFIX }}ims{{ current_cycle | to_julian }}_4km_v1.3.nc', '{{ DATA }}/obs/ims{{ current_cycle | to_julian }}_4km_v1.3.nc']
     - ['{{ FIXgfs }}/gdas/obs/ims/IMS_4km_to_{{ CASE }}.mx{{ OCNRES }}.nc', '{{ DATA }}/obs/IMS4km_to_FV3_mapping.{{ CASE }}_oro_data.nc']
 ims2ioda:
   copy:
-    - ['{{ DATA }}/ims_snow_{{ current_cycle | to_YMDH }}.nc4', '{{ COMOUT_OBS }}/{{ OPREFIX_OUT }}ims_snow.{{ CASE }}.nc4']
+    - ['{{ DATA }}/ims_snow_{{ current_cycle | to_YMDH }}.nc4', '{{ COM_OBS }}/{{ OPREFIX }}ims_snow.nc4']
 
diff --git a/test/testinput/bufr_adpsfc_snow.yaml b/test/testinput/bufr_adpsfc_snow.yaml
index da622f339..32a1950fa 100644
--- a/test/testinput/bufr_adpsfc_snow.yaml
+++ b/test/testinput/bufr_adpsfc_snow.yaml
@@ -5,7 +5,7 @@ observations:
   - obs space:
       name: bufr
 
-      obsdatain: '{{ DATA }}/obs/{{ OPREFIX_IN }}adpsfc.tm00.bufr_d'
+      obsdatain: '{{ DATA }}/obs/{{ OPREFIX }}adpsfc.tm00.bufr_d'
 
       exports:
         variables:
@@ -39,7 +39,7 @@ observations:
 
     ioda:
       backend: netcdf
-      obsdataout: '{{ DATA }}/{{ OPREFIX_OUT }}adpsfc_snow.nc4'
+      obsdataout: '{{ DATA }}/{{ OPREFIX }}adpsfc_snow.nc4'
 
       variables: