diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
index 17d142660e..62e80ef1d9 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
@@ -731,11 +731,18 @@ void turbulentTemperatureRadCoupledMixedFvPatchScalarField::write
 ) const
 {
     mixedFvPatchScalarField::write(os);
-    os.writeEntry("Tnbr", TnbrName_);
 
-    os.writeEntry("qrNbr", qrNbrName_);
-    os.writeEntry("qr", qrName_);
-    os.writeEntry("thermalInertia", thermalInertia_);
+    //os.writeEntry("Tnbr", TnbrName_);
+    os.writeEntryIfDifferent<word>("Tnbr", "T", TnbrName_);
+
+    //os.writeEntry("qrNbr", qrNbrName_);
+    os.writeEntryIfDifferent<word>("qrNbr", "none", qrNbrName_);
+    //os.writeEntry("qr", qrName_);
+    os.writeEntryIfDifferent<word>("qr", "none", qrName_);
+    if (thermalInertia_)
+    {
+        os.writeEntry("thermalInertia", thermalInertia_);
+    }
 
     if (thicknessLayer_)
     {
diff --git a/src/finiteVolume/fields/fvPatchFields/derived/mappedField/mappedPatchFieldBase.C b/src/finiteVolume/fields/fvPatchFields/derived/mappedField/mappedPatchFieldBase.C
index 2f05fcd713..c891352101 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/mappedField/mappedPatchFieldBase.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/mappedField/mappedPatchFieldBase.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2013-2016 OpenFOAM Foundation
-    Copyright (C) 2018-2021 OpenCFD Ltd.
+    Copyright (C) 2018-2022 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -1006,7 +1006,13 @@ void Foam::mappedPatchFieldBase<Type>::initRetrieveField
 template<class Type>
 void Foam::mappedPatchFieldBase<Type>::write(Ostream& os) const
 {
-    os.writeEntry("field", fieldName_);
+    //os.writeEntry("field", fieldName_);
+    os.writeEntryIfDifferent<word>
+    (
+        "field",
+        patchField_.internalField().name(),
+        fieldName_
+    );
 
     if (setAverage_)
     {