diff --git a/openstudiocore/src/energyplus/ForwardTranslator/ForwardTranslateRefrigerationCase.cpp b/openstudiocore/src/energyplus/ForwardTranslator/ForwardTranslateRefrigerationCase.cpp
index 34f286caf7f..0cedfbfbe10 100644
--- a/openstudiocore/src/energyplus/ForwardTranslator/ForwardTranslateRefrigerationCase.cpp
+++ b/openstudiocore/src/energyplus/ForwardTranslator/ForwardTranslateRefrigerationCase.cpp
@@ -250,22 +250,26 @@ boost::optional<IdfObject> ForwardTranslator::translateRefrigerationCase( Refrig
     }
   }
 
-//DefrostEnergyCorrectionCurveType
-  s = modelObject.defrostEnergyCorrectionCurveType();
-  if (s) {
-    object.setString(Refrigeration_CaseFields::DefrostEnergyCorrectionCurveType,s.get());
+  //DefrostEnergyCorrectionCurveType
+  {
+    auto value = modelObject.defrostEnergyCorrectionCurveType();
+    object.setString(Refrigeration_CaseFields::DefrostEnergyCorrectionCurveType,value);
   }
 
-//DefrostEnergyCorrectionCurveName
-  boost::optional<CurveCubic> defrostEnergyCorrectionCurve = modelObject.defrostEnergyCorrectionCurve();
-
-  if( defrostEnergyCorrectionCurve )
+  //DefrostEnergyCorrectionCurveName
+  if( auto defrostEnergyCorrectionCurve = modelObject.defrostEnergyCorrectionCurve() )
   {
-    boost::optional<IdfObject> _defrostEnergyCorrectionCurve = translateAndMapModelObject(defrostEnergyCorrectionCurve.get());
-
-    if( _defrostEnergyCorrectionCurve && _defrostEnergyCorrectionCurve->name() )
-    {
-      object.setString(Refrigeration_CaseFields::DefrostEnergyCorrectionCurveName,_defrostEnergyCorrectionCurve->name().get());
+    auto type = modelObject.caseDefrostType();
+    // Only for these types or E+ will halt.
+    if( istringEqual(type,"HotGasWithTemperatureTermination") ||
+      istringEqual(type,"ElectricWithTemperatureTermination") ||
+      istringEqual(type,"HotFluidWithTemperatureTermination") ) {
+      boost::optional<IdfObject> _defrostEnergyCorrectionCurve = translateAndMapModelObject(defrostEnergyCorrectionCurve.get());
+
+      if( _defrostEnergyCorrectionCurve && _defrostEnergyCorrectionCurve->name() )
+      {
+        object.setString(Refrigeration_CaseFields::DefrostEnergyCorrectionCurveName,_defrostEnergyCorrectionCurve->name().get());
+      }
     }
   }
 
diff --git a/openstudiocore/src/model/RefrigerationCase.cpp b/openstudiocore/src/model/RefrigerationCase.cpp
index 55580885707..de1bcdff84a 100644
--- a/openstudiocore/src/model/RefrigerationCase.cpp
+++ b/openstudiocore/src/model/RefrigerationCase.cpp
@@ -126,6 +126,10 @@ namespace detail {
       modelObjectClone.getImpl<RefrigerationCase_Impl>()->setCaseDefrostCycleParameters(caseDefrostCycleParameters->clone(model).cast<RefrigerationDefrostCycleParameters>());
     }
 
+    if( auto curve = defrostEnergyCorrectionCurve() ) {
+      modelObjectClone.setDefrostEnergyCorrectionCurve(curve->clone(model).cast<CurveCubic>());
+    }
+
     modelObjectClone.resetThermalZone();
 
     return modelObjectClone;
@@ -159,6 +163,11 @@ namespace detail {
     if (boost::optional<CurveCubic> intermediate = latentCaseCreditCurve()) {
       result.push_back(*intermediate);
     }
+
+    if( auto curve = defrostEnergyCorrectionCurve() ) {
+      result.push_back(curve.get());
+    }
+
     return result;
   }
 
diff --git a/openstudiocore/src/openstudio_app/Resources/hvaclibrary/hvac_library.osm b/openstudiocore/src/openstudio_app/Resources/hvaclibrary/hvac_library.osm
index b51ea36805c..87ef906d480 100644
--- a/openstudiocore/src/openstudio_app/Resources/hvaclibrary/hvac_library.osm
+++ b/openstudiocore/src/openstudio_app/Resources/hvaclibrary/hvac_library.osm
@@ -3238,13 +3238,27 @@ OS:Refrigeration:Case,
   {57b587d9-11b3-4700-a362-25f9ac3035d5}, !- Case Defrost Schedule Name
   {57b587d9-11b3-4700-a362-25f9ac3035d5}, !- Case Defrost Drip-Down Schedule Name
   None,                                   !- Defrost Energy Correction Curve Type
-  ,                                       !- Defrost Energy Correction Curve Name
+  {dde2f531-75bc-4d59-94cd-01bf3bf4bcc7}, !- Defrost Energy Correction Curve Name
   0,                                      !- Under Case HVAC Return Air Fraction
   ,                                       !- Refrigerated Case Restocking Schedule Name
   ,                                       !- Case Credit Fraction Schedule Name
   -5.56,                                  !- Design Evaporator Temperature or Brine Inlet Temperature {C}
   ;                                       !- Average Refrigerant Charge Inventory {kg/m}
 
+OS:Curve:Cubic,
+  {dde2f531-75bc-4d59-94cd-01bf3bf4bcc7},   !- Handle
+  Refrigerated Case Defrost Modifier Curve, !- Name
+  1,                                        !- Coefficient1 Constant
+  0,                                        !- Coefficient2 x
+  0,                                        !- Coefficient3 x**2
+  0,                                        !- Coefficient4 x**3
+  0,                                        !- Minimum Value of x {BasedOnField A2}
+  1,                                        !- Maximum Value of x {BasedOnField A2}
+  ,                                         !- Minimum Curve Output {BasedOnField A3}
+  ,                                         !- Maximum Curve Output {BasedOnField A3}
+  ,                                         !- Input Unit Type for X
+  ;                                         !- Output Unit Type
+
 OS:Curve:Cubic,
   {012a63c6-2590-4f3d-a487-c600bf72ad75}, !- Handle
   Refrigerated Case Latent Credit Curve,  !- Name
diff --git a/openstudiocore/src/openstudio_lib/library/OpenStudioPolicy.xml b/openstudiocore/src/openstudio_lib/library/OpenStudioPolicy.xml
index 0d4cc534a97..92577c8073c 100644
--- a/openstudiocore/src/openstudio_lib/library/OpenStudioPolicy.xml
+++ b/openstudiocore/src/openstudio_lib/library/OpenStudioPolicy.xml
@@ -705,8 +705,7 @@
   </POLICY>
   <POLICY IddObjectType="OS_Refrigeration_Case">
     <rule IddField="Latent Case Credit Curve Name" Access="LOCKED"/>
-    <rule IddField="Defrost Energy Correction Curve Name" Access="HIDDEN"/>
-    <rule IddField="Defrost Energy Correction Curve Type" Access="LOCKED"/>
+    <rule IddField="Defrost Energy Correction Curve Name" Access="LOCKED"/>
   </POLICY>
   <POLICY IddObjectType="OS_Refrigeration_WalkIn">
     <rule IddField="Walkin Zone Boundary" Access="HIDDEN"/>