diff --git a/.testing/tc0/MOM_input b/.testing/tc0/MOM_input
index ff64c55803..e4d1694e72 100644
--- a/.testing/tc0/MOM_input
+++ b/.testing/tc0/MOM_input
@@ -230,7 +230,6 @@ ENERGYSAVEDAYS = 1.0
 
 DIAG_AS_CHKSUM = True
 DEBUG = True
-DEFAULT_2018_ANSWERS = True     !   [Boolean] default = True
 GRID_ROTATION_ANGLE_BUGS = True !   [Boolean] default = True
 USE_GM_WORK_BUG = True          !   [Boolean] default = True
 FIX_UNSPLIT_DT_VISC_BUG = False !   [Boolean] default = False
diff --git a/.testing/tc1/MOM_input b/.testing/tc1/MOM_input
index 68674f7a86..151c093ff9 100644
--- a/.testing/tc1/MOM_input
+++ b/.testing/tc1/MOM_input
@@ -575,7 +575,6 @@ ENERGYSAVEDAYS = 0.125          !   [days] default = 3600.0
 DIAG_AS_CHKSUM = True
 DEBUG = True
 USE_PSURF_IN_EOS = False        !   [Boolean] default = False
-DEFAULT_2018_ANSWERS = True     !   [Boolean] default = True
 GRID_ROTATION_ANGLE_BUGS = True !   [Boolean] default = True
 INTERPOLATE_RES_FN = True       !   [Boolean] default = True
 GILL_EQUATORIAL_LD = False      !   [Boolean] default = False
diff --git a/.testing/tc2/MOM_input b/.testing/tc2/MOM_input
index 1818390192..ca84d1c382 100644
--- a/.testing/tc2/MOM_input
+++ b/.testing/tc2/MOM_input
@@ -610,7 +610,6 @@ DIAG_AS_CHKSUM = True
 DEBUG = True
 USE_GM_WORK_BUG = False
 USE_PSURF_IN_EOS = False        !   [Boolean] default = False
-DEFAULT_2018_ANSWERS = True     !   [Boolean] default = True
 GRID_ROTATION_ANGLE_BUGS = True !   [Boolean] default = True
 REMAP_UV_USING_OLD_ALG = True   !   [Boolean] default = True
 USE_LAND_MASK_FOR_HVISC = False !   [Boolean] default = False
diff --git a/.testing/tc3/MOM_input b/.testing/tc3/MOM_input
index 9112898b4c..a034960d1e 100644
--- a/.testing/tc3/MOM_input
+++ b/.testing/tc3/MOM_input
@@ -469,7 +469,6 @@ ENERGYSAVEDAYS = 3.0            !   [hours] default = 1.44E+04
                                 ! energies of the run and other globally summed diagnostics.
 DIAG_AS_CHKSUM = True
 DEBUG = True
-DEFAULT_2018_ANSWERS = True     !   [Boolean] default = True
 OBC_RADIATION_MAX = 10.0        !   [nondim] default = 10.0
 GRID_ROTATION_ANGLE_BUGS = True !   [Boolean] default = True
 USE_GM_WORK_BUG = True          !   [Boolean] default = True
diff --git a/.testing/tc4/MOM_input b/.testing/tc4/MOM_input
index 04598a9dc9..e33bf40bf6 100644
--- a/.testing/tc4/MOM_input
+++ b/.testing/tc4/MOM_input
@@ -409,7 +409,6 @@ DIAG_AS_CHKSUM = True
 DEBUG = True
 
 USE_PSURF_IN_EOS = False        !   [Boolean] default = False
-DEFAULT_2018_ANSWERS = True     !   [Boolean] default = True
 GRID_ROTATION_ANGLE_BUGS = True !   [Boolean] default = True
 INTERPOLATE_RES_FN = True       !   [Boolean] default = True
 GILL_EQUATORIAL_LD = False      !   [Boolean] default = False