diff --git a/ProcessLib/ThermoRichardsMechanics/Tests.cmake b/ProcessLib/ThermoRichardsMechanics/Tests.cmake
index 65a99634521e9fab4a243c4dfd57022a0c4679f3..54c39047d50f2d26fa4c2d41498a546a6a968fc0 100644
--- a/ProcessLib/ThermoRichardsMechanics/Tests.cmake
+++ b/ProcessLib/ThermoRichardsMechanics/Tests.cmake
@@ -461,4 +461,5 @@ endif()
if (NOT OGS_USE_MPI)
OgsTest(PROJECTFILE ThermoRichardsMechanics/Mockup2D/mockup.prj RUNTIME 60)
+ OgsTest(PROJECTFILE ThermoRichardsMechanics/Mockup2D/mockup_restart.xml RUNTIME 30)
endif()
diff --git a/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_restart.xml b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_restart.xml
new file mode 100644
index 0000000000000000000000000000000000000000..4d2e098158f10053e4918747879923b191f3a1b6
--- /dev/null
+++ b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_restart.xml
@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<OpenGeoSysProjectDiff base_file="mockup.prj">
+ <replace sel="/*/meshes/mesh[1]/text()">mockup_results_51840000.000000.vtu</replace>
+
+ <add sel="/*/processes/process">
+ <initialize_porosity_from_medium_property>false</initialize_porosity_from_medium_property>
+ </add>
+
+ <replace sel="/*/time_loop/processes/process/time_stepping/t_initial/text()">51840000.000000</replace>
+
+ <!-- This is the step size from the non-restart version (see base_file) **after** t = 51840000.000000 s.
+ It's exact value is crucial to meet the tight tolerances set in this test. -->
+ <replace sel="/*/time_loop/processes/process/time_stepping/initial_dt/text()">4696576.89244747</replace>
+
+ <replace sel="/*/time_loop/output/prefix/text()">mockup_results_restart</replace>
+
+ <remove sel="/*/parameters/parameter[name='displacement0']" />
+ <add sel="/*/parameters">
+ <parameter>
+ <name>displacement0</name>
+ <type>MeshNode</type>
+ <mesh>mockup_results_51840000.000000</mesh>
+ <field_name>displacement</field_name>
+ </parameter>
+ </add>
+
+ <remove sel="/*/parameters/parameter[name='p0']" />
+ <add sel="/*/parameters">
+ <parameter>
+ <name>p0</name>
+ <type>MeshNode</type>
+ <mesh>mockup_results_51840000.000000</mesh>
+ <field_name>pressure</field_name>
+ </parameter>
+ </add>
+
+ <remove sel="/*/parameters/parameter[name='T_ref']" />
+ <add sel="/*/parameters">
+ <parameter>
+ <name>T_ref</name>
+ <type>MeshNode</type>
+ <mesh>mockup_results_51840000.000000</mesh>
+ <field_name>temperature</field_name>
+ </parameter>
+ </add>
+
+ <remove sel="/*/test_definition"/>
+ <add sel="/*">
+ <test_definition>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>displacement</field>
+ <absolute_tolerance>1e-15</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>epsilon</field>
+ <absolute_tolerance>2e-15</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>porosity</field>
+ <absolute_tolerance>2e-15</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>pressure</field>
+ <absolute_tolerance>6e-6</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>saturation</field>
+ <absolute_tolerance>4e-14</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>sigma</field>
+ <absolute_tolerance>8e-7</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>swelling_stress</field>
+ <absolute_tolerance>2e-7</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>temperature</field>
+ <absolute_tolerance>4e-12</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>intrinsic_permeability</field>
+ <absolute_tolerance>1e-15</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>relative_permeability</field>
+ <absolute_tolerance>6e-14</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>intrinsic_permeability_ip</field>
+ <absolute_tolerance>1e-15</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ <vtkdiff>
+ <regex>mockup_results_restart_.*[.]vtu</regex>
+ <field>relative_permeability_ip</field>
+ <absolute_tolerance>5e-14</absolute_tolerance>
+ <relative_tolerance>0</relative_tolerance>
+ </vtkdiff>
+ </test_definition>
+ </add>
+</OpenGeoSysProjectDiff>
diff --git a/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart.pvd b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart.pvd
new file mode 100644
index 0000000000000000000000000000000000000000..d9badb7647488ebb610359f87c210b4eba6f5383
--- /dev/null
+++ b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart.pvd
@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<VTKFile type="Collection" version="0.1" byte_order="LittleEndian" compressor="vtkZLibDataCompressor">
+ <Collection>
+ <DataSet timestep="51840000" group="" part="0" file="mockup_results_restart_51840000.000000.vtu"/>
+ </Collection>
+</VTKFile>
diff --git a/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_51840000.000000.vtu b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_51840000.000000.vtu
new file mode 120000
index 0000000000000000000000000000000000000000..789f8320d65b632c41a109458aaa033b798de3e3
--- /dev/null
+++ b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_51840000.000000.vtu
@@ -0,0 +1 @@
+mockup_results_51840000.000000.vtu
\ No newline at end of file
diff --git a/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_69120000.000000.vtu b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_69120000.000000.vtu
new file mode 120000
index 0000000000000000000000000000000000000000..795be219169b5b53ef882acab450b3504bb718bf
--- /dev/null
+++ b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_69120000.000000.vtu
@@ -0,0 +1 @@
+mockup_results_69120000.000000.vtu
\ No newline at end of file
diff --git a/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_86400000.000000.vtu b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_86400000.000000.vtu
new file mode 120000
index 0000000000000000000000000000000000000000..3f8e386eed637596795c2268161baf135420bb07
--- /dev/null
+++ b/Tests/Data/ThermoRichardsMechanics/Mockup2D/mockup_results_restart_86400000.000000.vtu
@@ -0,0 +1 @@
+mockup_results_86400000.000000.vtu
\ No newline at end of file