diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case1/geometry.xml b/tests/regression_tests/mg_temperature/macro/interpolation/case1/geometry.xml
deleted file mode 100644
index e66b004c5..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case1/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="33 -34 35 -36" temperature="520.0" universe="9" />
-  <surface boundary="reflective" coeffs="-11.1" id="33" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="34" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="35" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="36" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case1/materials.xml b/tests/regression_tests/mg_temperature/macro/interpolation/case1/materials.xml
deleted file mode 100644
index e3e2097cb..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case1/materials.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../macro_2g.h5</cross_sections>
-  <material id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="macro" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case1/results_true.dat b/tests/regression_tests/mg_temperature/macro/interpolation/case1/results_true.dat
deleted file mode 100644
index 8cc89cfb0..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case1/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.422739E+00 1.661420E-03
-k-analytical:
-1.418514E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case1/settings.xml b/tests/regression_tests/mg_temperature/macro/interpolation/case1/settings.xml
deleted file mode 100644
index 4a51e8e80..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case1/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>interpolation</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case2/geometry.xml b/tests/regression_tests/mg_temperature/macro/interpolation/case2/geometry.xml
deleted file mode 100644
index 838fb9f68..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case2/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="37 -38 39 -40" temperature="600" universe="10" />
-  <surface boundary="reflective" coeffs="-11.1" id="37" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="38" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="39" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="40" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case2/materials.xml b/tests/regression_tests/mg_temperature/macro/interpolation/case2/materials.xml
deleted file mode 100644
index e3e2097cb..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case2/materials.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../macro_2g.h5</cross_sections>
-  <material id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="macro" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case2/results_true.dat b/tests/regression_tests/mg_temperature/macro/interpolation/case2/results_true.dat
deleted file mode 100644
index 965fe8002..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case2/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.410995E+00 2.169214E-03
-k-analytical:
-1.410164E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/macro/interpolation/case2/settings.xml b/tests/regression_tests/mg_temperature/macro/interpolation/case2/settings.xml
deleted file mode 100644
index 4a51e8e80..000000000
--- a/tests/regression_tests/mg_temperature/macro/interpolation/case2/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>interpolation</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case1/geometry.xml b/tests/regression_tests/mg_temperature/macro/nearest/case1/geometry.xml
deleted file mode 100644
index f64d31593..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case1/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="21 -22 23 -24" temperature="300.0" universe="6" />
-  <surface boundary="reflective" coeffs="-11.1" id="21" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="22" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="23" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="24" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case1/materials.xml b/tests/regression_tests/mg_temperature/macro/nearest/case1/materials.xml
deleted file mode 100644
index e3e2097cb..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case1/materials.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../macro_2g.h5</cross_sections>
-  <material id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="macro" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case1/results_true.dat b/tests/regression_tests/mg_temperature/macro/nearest/case1/results_true.dat
deleted file mode 100644
index 5d7f81f28..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case1/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.443970E+00 3.267499E-03
-k-analytical:
-1.440410E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case1/settings.xml b/tests/regression_tests/mg_temperature/macro/nearest/case1/settings.xml
deleted file mode 100644
index b5ad0fec4..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case1/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>nearest</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case2/geometry.xml b/tests/regression_tests/mg_temperature/macro/nearest/case2/geometry.xml
deleted file mode 100644
index de5693110..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case2/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="25 -26 27 -28" temperature="600.0" universe="7" />
-  <surface boundary="reflective" coeffs="-11.1" id="25" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="26" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="27" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="28" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case2/materials.xml b/tests/regression_tests/mg_temperature/macro/nearest/case2/materials.xml
deleted file mode 100644
index e3e2097cb..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case2/materials.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../macro_2g.h5</cross_sections>
-  <material id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="macro" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case2/results_true.dat b/tests/regression_tests/mg_temperature/macro/nearest/case2/results_true.dat
deleted file mode 100644
index 965fe8002..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case2/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.410995E+00 2.169214E-03
-k-analytical:
-1.410164E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case2/settings.xml b/tests/regression_tests/mg_temperature/macro/nearest/case2/settings.xml
deleted file mode 100644
index b5ad0fec4..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case2/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>nearest</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case3/geometry.xml b/tests/regression_tests/mg_temperature/macro/nearest/case3/geometry.xml
deleted file mode 100644
index a95b7b55a..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case3/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="29 -30 31 -32" temperature="900.0" universe="8" />
-  <surface boundary="reflective" coeffs="-11.1" id="29" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="30" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="31" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="32" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case3/materials.xml b/tests/regression_tests/mg_temperature/macro/nearest/case3/materials.xml
deleted file mode 100644
index e3e2097cb..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case3/materials.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../macro_2g.h5</cross_sections>
-  <material id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="macro" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case3/results_true.dat b/tests/regression_tests/mg_temperature/macro/nearest/case3/results_true.dat
deleted file mode 100644
index 39d3eb5e3..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case3/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.411726E+00 2.151179E-03
-k-analytical:
-1.407830E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/macro/nearest/case3/settings.xml b/tests/regression_tests/mg_temperature/macro/nearest/case3/settings.xml
deleted file mode 100644
index b5ad0fec4..000000000
--- a/tests/regression_tests/mg_temperature/macro/nearest/case3/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>nearest</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case1/geometry.xml b/tests/regression_tests/mg_temperature/micro/interpolation/case1/geometry.xml
deleted file mode 100644
index b54f27f41..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case1/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="13 -14 15 -16" temperature="520.0" universe="4" />
-  <surface boundary="reflective" coeffs="-11.1" id="13" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="14" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="15" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="16" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case1/materials.xml b/tests/regression_tests/mg_temperature/micro/interpolation/case1/materials.xml
deleted file mode 100644
index 98f9236e6..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case1/materials.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../micro_2g.h5</cross_sections>
-  <material depletable="true" id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="H" />
-    <nuclide ao="1" name="O" />
-    <nuclide ao="1" name="Zr" />
-    <nuclide ao="1" name="U235" />
-    <nuclide ao="1" name="U238" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case1/results_true.dat b/tests/regression_tests/mg_temperature/micro/interpolation/case1/results_true.dat
deleted file mode 100644
index 8cc89cfb0..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case1/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.422739E+00 1.661420E-03
-k-analytical:
-1.418514E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case1/settings.xml b/tests/regression_tests/mg_temperature/micro/interpolation/case1/settings.xml
deleted file mode 100644
index 4a51e8e80..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case1/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>interpolation</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case2/geometry.xml b/tests/regression_tests/mg_temperature/micro/interpolation/case2/geometry.xml
deleted file mode 100644
index 4eeb35ac8..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case2/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="17 -18 19 -20" temperature="600.0" universe="5" />
-  <surface boundary="reflective" coeffs="-11.1" id="17" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="18" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="19" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="20" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case2/materials.xml b/tests/regression_tests/mg_temperature/micro/interpolation/case2/materials.xml
deleted file mode 100644
index 98f9236e6..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case2/materials.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../micro_2g.h5</cross_sections>
-  <material depletable="true" id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="H" />
-    <nuclide ao="1" name="O" />
-    <nuclide ao="1" name="Zr" />
-    <nuclide ao="1" name="U235" />
-    <nuclide ao="1" name="U238" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case2/results_true.dat b/tests/regression_tests/mg_temperature/micro/interpolation/case2/results_true.dat
deleted file mode 100644
index 965fe8002..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case2/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.410995E+00 2.169214E-03
-k-analytical:
-1.410164E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/micro/interpolation/case2/settings.xml b/tests/regression_tests/mg_temperature/micro/interpolation/case2/settings.xml
deleted file mode 100644
index 4a51e8e80..000000000
--- a/tests/regression_tests/mg_temperature/micro/interpolation/case2/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>interpolation</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case1/geometry.xml b/tests/regression_tests/mg_temperature/micro/nearest/case1/geometry.xml
deleted file mode 100644
index e1da2fa5c..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case1/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="1 -2 3 -4" temperature="300.0" universe="1" />
-  <surface boundary="reflective" coeffs="-11.1" id="1" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="2" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="3" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="4" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case1/materials.xml b/tests/regression_tests/mg_temperature/micro/nearest/case1/materials.xml
deleted file mode 100644
index 98f9236e6..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case1/materials.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../micro_2g.h5</cross_sections>
-  <material depletable="true" id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="H" />
-    <nuclide ao="1" name="O" />
-    <nuclide ao="1" name="Zr" />
-    <nuclide ao="1" name="U235" />
-    <nuclide ao="1" name="U238" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case1/results_true.dat b/tests/regression_tests/mg_temperature/micro/nearest/case1/results_true.dat
deleted file mode 100644
index 5d7f81f28..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case1/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.443970E+00 3.267499E-03
-k-analytical:
-1.440410E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case1/settings.xml b/tests/regression_tests/mg_temperature/micro/nearest/case1/settings.xml
deleted file mode 100644
index b5ad0fec4..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case1/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>nearest</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case2/geometry.xml b/tests/regression_tests/mg_temperature/micro/nearest/case2/geometry.xml
deleted file mode 100644
index 1ac560e8f..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case2/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="5 -6 7 -8" temperature="600.0" universe="2" />
-  <surface boundary="reflective" coeffs="-11.1" id="5" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="6" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="7" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="8" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case2/materials.xml b/tests/regression_tests/mg_temperature/micro/nearest/case2/materials.xml
deleted file mode 100644
index 98f9236e6..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case2/materials.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../micro_2g.h5</cross_sections>
-  <material depletable="true" id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="H" />
-    <nuclide ao="1" name="O" />
-    <nuclide ao="1" name="Zr" />
-    <nuclide ao="1" name="U235" />
-    <nuclide ao="1" name="U238" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case2/results_true.dat b/tests/regression_tests/mg_temperature/micro/nearest/case2/results_true.dat
deleted file mode 100644
index 965fe8002..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case2/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.410995E+00 2.169214E-03
-k-analytical:
-1.410164E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case2/settings.xml b/tests/regression_tests/mg_temperature/micro/nearest/case2/settings.xml
deleted file mode 100644
index b5ad0fec4..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case2/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>nearest</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case3/geometry.xml b/tests/regression_tests/mg_temperature/micro/nearest/case3/geometry.xml
deleted file mode 100644
index c8d1164f1..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case3/geometry.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="cell" region="9 -10 11 -12" temperature="900.0" universe="3" />
-  <surface boundary="reflective" coeffs="-11.1" id="9" type="x-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="10" type="x-plane" />
-  <surface boundary="reflective" coeffs="-11.1" id="11" type="y-plane" />
-  <surface boundary="reflective" coeffs="11.1" id="12" type="y-plane" />
-</geometry>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case3/materials.xml b/tests/regression_tests/mg_temperature/micro/nearest/case3/materials.xml
deleted file mode 100644
index 98f9236e6..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case3/materials.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <cross_sections>../../../micro_2g.h5</cross_sections>
-  <material depletable="true" id="1" name="test material">
-    <density units="sum" />
-    <nuclide ao="1" name="H" />
-    <nuclide ao="1" name="O" />
-    <nuclide ao="1" name="Zr" />
-    <nuclide ao="1" name="U235" />
-    <nuclide ao="1" name="U238" />
-  </material>
-</materials>
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case3/results_true.dat b/tests/regression_tests/mg_temperature/micro/nearest/case3/results_true.dat
deleted file mode 100644
index 39d3eb5e3..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case3/results_true.dat
+++ /dev/null
@@ -1,4 +0,0 @@
-k-combined:
-1.411726E+00 2.151179E-03
-k-analytical:
-1.407830E+00
\ No newline at end of file
diff --git a/tests/regression_tests/mg_temperature/micro/nearest/case3/settings.xml b/tests/regression_tests/mg_temperature/micro/nearest/case3/settings.xml
deleted file mode 100644
index b5ad0fec4..000000000
--- a/tests/regression_tests/mg_temperature/micro/nearest/case3/settings.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>5000</particles>
-  <batches>15</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-11.1 -11.1 -11.1 11.1 11.1 11.1</parameters>
-    </space>
-  </source>
-  <output>
-    <summary>false</summary>
-  </output>
-  <energy_mode>multi-group</energy_mode>
-  <temperature_method>nearest</temperature_method>
-</settings>
diff --git a/tests/regression_tests/mg_temperature/results_true.dat b/tests/regression_tests/mg_temperature/results_true.dat
new file mode 100644
index 000000000..e37bc533a
--- /dev/null
+++ b/tests/regression_tests/mg_temperature/results_true.dat
@@ -0,0 +1,40 @@
+micro, method: nearest, t: 300.0, k-combined:
+1.439920E+00 4.801994E-04
+kanalyt
+1.440410E+00
+micro, method: nearest, t: 600.0, k-combined:
+1.410482E+00 4.811844E-04
+kanalyt
+1.410164E+00
+micro, method: nearest, t: 900.0, k-combined:
+1.408198E+00 4.885882E-04
+kanalyt
+1.407830E+00
+micro, method: interpolation, t: 520.0, k-combined:
+1.418780E+00 5.222658E-04
+kanalyt
+1.418514E+00
+micro, method: interpolation, t: 600.0, k-combined:
+1.410482E+00 4.811844E-04
+kanalyt
+1.410164E+00
+macro, method: nearest, t: 300.0, k-combined:
+1.439920E+00 4.801994E-04
+kanalyt
+1.440410E+00
+macro, method: nearest, t: 600.0, k-combined:
+1.410482E+00 4.811844E-04
+kanalyt
+1.410164E+00
+macro, method: nearest, t: 900.0, k-combined:
+1.408198E+00 4.885882E-04
+kanalyt
+1.407830E+00
+macro, method: interpolation, t: 520.0, k-combined:
+1.418780E+00 5.222658E-04
+kanalyt
+1.418514E+00
+macro, method: interpolation, t: 600, k-combined:
+1.410482E+00 4.811844E-04
+kanalyt
+1.410164E+00