diff --git a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/BuoyancyMaterials.json b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/BuoyancyMaterials.json
index c6d4b38a..c77b0672 100644
--- a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/BuoyancyMaterials.json
+++ b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/BuoyancyMaterials.json
@@ -1,6 +1,6 @@
 {
     "properties" : [{
-        "model_part_name" : "Parts_Fluid",
+        "model_part_name" : "FluidModelPart.Parts_Fluid",
         "properties_id"   : 1,
         "Material"        : {
             "Variables" : {
diff --git a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ConvectionDiffusionMaterials.json b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ConvectionDiffusionMaterials.json
index b2476d10..8ce145b6 100644
--- a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ConvectionDiffusionMaterials.json
+++ b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ConvectionDiffusionMaterials.json
@@ -1,6 +1,6 @@
 {
     "properties" : [{
-        "model_part_name" : "Parts_Solid",
+        "model_part_name" : "ThermalModelPart.Parts_Solid",
         "properties_id"   : 2,
         "Material"        : {
             "Variables" : {
diff --git a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/MainKratos.py b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/MainKratos.py
index 0796b233..a504a561 100644
--- a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/MainKratos.py
+++ b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/MainKratos.py
@@ -5,7 +5,7 @@
 import KratosMultiphysics.ConvectionDiffusionApplication
 
 
-from convection_diffusion_analysis import ConvectionDiffusionAnalysis
+from KratosMultiphysics.ConvectionDiffusionApplication.convection_diffusion_analysis import ConvectionDiffusionAnalysis
 
 import sys
 import time
diff --git a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ProjectParameters.json b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ProjectParameters.json
index c26450da..f8bec868 100644
--- a/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ProjectParameters.json
+++ b/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2/source/ProjectParameters.json
@@ -91,7 +91,7 @@
                 "solution_absolute_tolerance"        : 1e-7,
                 "residual_relative_tolerance"        : 1e-5,
                 "residual_absolute_tolerance"        : 1e-7,
-                "problem_domain_sub_model_part_list" : ["Parts_Solid"],
+                "problem_domain_sub_model_part_list" : ["ThermalModelPart.Parts_Solid"],
                 "processes_sub_model_part_list"      : ["TEMPERATURE_Solid","SolidThermalInterface2D_Solid_Interface"],
                 "time_stepping"                      : {
                     "time_step" : 0.1
@@ -101,8 +101,8 @@
         "coupling_settings"            : {
             "max_iteration"                  : 10,
             "temperature_relative_tolerance" : 1e-5,
-            "fluid_interfaces_list"          : ["FluidThermalInterface2D_Fluid_Interface"],
-            "solid_interfaces_list"          : ["SolidThermalInterface2D_Solid_Interface"]
+            "fluid_interfaces_list"          : ["FluidThermalModelPart.FluidThermalInterface2D_Fluid_Interface"],
+            "solid_interfaces_list"          : ["ThermalModelPart.SolidThermalInterface2D_Solid_Interface"]
         }
     },
     "output_processes" : {
@@ -141,7 +141,7 @@
             "process_name"  : "GiDOutputProcess",
             "help"          : "This process writes postprocessing files for GiD",
             "Parameters"    : {
-                "model_part_name"        : "ThermalModelPart.thermal_computing_domain",
+                "model_part_name"        : "ThermalModelPart.Parts_Solid",
                 "output_name"            : "test_cylinder_cooling_Re100_Pr2_solid",
                 "postprocess_parameters" : {
                     "result_file_configuration" : {
@@ -266,7 +266,7 @@
             "kratos_module" : "KratosMultiphysics",
             "process_name"  : "AssignScalarVariableProcess",
             "Parameters"    : {
-                "model_part_name" : "Parts_Solid",
+                "model_part_name" : "ThermalModelPart.Parts_Solid",
                 "variable_name"   : "HEAT_FLUX",
                 "value"           : 0.0,
                 "constrained"     : false