diff --git a/tests/regression_tests/mgxs_library_specific_nuclides/inputs_true.dat b/tests/regression_tests/mgxs_library_specific_nuclides/inputs_true.dat
index 061aa1b95..938b1c19d 100644
--- a/tests/regression_tests/mgxs_library_specific_nuclides/inputs_true.dat
+++ b/tests/regression_tests/mgxs_library_specific_nuclides/inputs_true.dat
@@ -1,218 +1,217 @@
 <?xml version='1.0' encoding='utf-8'?>
-<geometry>
-  <cell id="1" material="1" name="Fuel" region="-1" universe="0" />
-  <cell id="2" material="2" name="Cladding" region="1 -2" universe="0" />
-  <cell id="3" material="3" name="Water" region="2 3 -4 5 -6" universe="0" />
-  <surface coeffs="0 0 0.39218" id="1" name="Fuel OR" type="z-cylinder" />
-  <surface coeffs="0 0 0.4572" id="2" name="Clad OR" type="z-cylinder" />
-  <surface boundary="reflective" coeffs="-0.63" id="3" name="left" type="x-plane" />
-  <surface boundary="reflective" coeffs="0.63" id="4" name="right" type="x-plane" />
-  <surface boundary="reflective" coeffs="-0.63" id="5" name="bottom" type="y-plane" />
-  <surface boundary="reflective" coeffs="0.63" id="6" name="top" type="y-plane" />
-</geometry>
-<?xml version='1.0' encoding='utf-8'?>
-<materials>
-  <material depletable="true" id="1" name="UO2 (2.4%)">
-    <density units="g/cm3" value="10.29769" />
-    <nuclide ao="4.4843e-06" name="U234" />
-    <nuclide ao="0.00055815" name="U235" />
-    <nuclide ao="0.022408" name="U238" />
-    <nuclide ao="0.045829" name="O16" />
-  </material>
-  <material id="2" name="Zircaloy">
-    <density units="g/cm3" value="6.55" />
-    <nuclide ao="0.021827" name="Zr90" />
-    <nuclide ao="0.00476" name="Zr91" />
-    <nuclide ao="0.0072758" name="Zr92" />
-    <nuclide ao="0.0073734" name="Zr94" />
-    <nuclide ao="0.0011879" name="Zr96" />
-  </material>
-  <material id="3" name="Hot borated water">
-    <density units="g/cm3" value="0.740582" />
-    <nuclide ao="0.049457" name="H1" />
-    <nuclide ao="0.024672" name="O16" />
-    <nuclide ao="8.0042e-06" name="B10" />
-    <nuclide ao="3.2218e-05" name="B11" />
-    <sab name="c_H_in_H2O" />
-  </material>
-</materials>
-<?xml version='1.0' encoding='utf-8'?>
-<settings>
-  <run_mode>eigenvalue</run_mode>
-  <particles>100</particles>
-  <batches>10</batches>
-  <inactive>5</inactive>
-  <source strength="1.0">
-    <space type="fission">
-      <parameters>-0.63 -0.63 -1 0.63 0.63 1</parameters>
-    </space>
-  </source>
-</settings>
-<?xml version='1.0' encoding='utf-8'?>
-<tallies>
-  <filter id="383" type="material">
-    <bins>1 2 3</bins>
-  </filter>
-  <filter id="2" type="energy">
-    <bins>0.0 0.625 20000000.0</bins>
-  </filter>
-  <filter id="1" type="material">
-    <bins>1</bins>
-  </filter>
-  <filter id="5" type="energyout">
-    <bins>0.0 0.625 20000000.0</bins>
-  </filter>
-  <filter id="6" type="legendre">
-    <order>1</order>
-  </filter>
-  <filter id="30" type="legendre">
-    <order>3</order>
-  </filter>
-  <filter id="54" type="energy">
-    <bins>0.0 20000000.0</bins>
-  </filter>
-  <filter id="106" type="material">
-    <bins>2</bins>
-  </filter>
-  <filter id="251" type="material">
-    <bins>3</bins>
-  </filter>
-  <tally id="528">
-    <filters>383 2</filters>
-    <nuclides>total</nuclides>
-    <scores>flux</scores>
-    <estimator>tracklength</estimator>
-  </tally>
-  <tally id="167">
-    <filters>1 2</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>total absorption (n,2n) (n,3n) (n,4n) fission nu-fission kappa-fission scatter inverse-velocity prompt-nu-fission (n,elastic) (n,level) (n,na) (n,nc) (n,gamma) (n,a) (n,Xa) heating damage-energy (n,n1) (n,a0)</scores>
-    <estimator>tracklength</estimator>
-  </tally>
-  <tally id="540">
-    <filters>383 2</filters>
-    <nuclides>total</nuclides>
-    <scores>flux</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="119">
-    <filters>1 5 6</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>scatter nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="54">
-    <filters>1 2</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="84">
-    <filters>1 2 5 30</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>scatter nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="179">
-    <filters>1 2 5</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>nu-scatter scatter nu-fission prompt-nu-fission (n,nc) (n,n1) (n,2n)</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="90">
-    <filters>1 54</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>nu-fission prompt-nu-fission</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="91">
-    <filters>1 5</filters>
-    <nuclides>U235 total</nuclides>
-    <scores>nu-fission prompt-nu-fission</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="348">
-    <filters>106 2</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>total absorption (n,2n) (n,3n) (n,4n) fission nu-fission kappa-fission scatter inverse-velocity prompt-nu-fission (n,elastic) (n,level) (n,na) (n,nc) (n,gamma) (n,a) (n,Xa) heating damage-energy (n,n1) (n,a0)</scores>
-    <estimator>tracklength</estimator>
-  </tally>
-  <tally id="300">
-    <filters>106 5 6</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>scatter nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="235">
-    <filters>106 2</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="265">
-    <filters>106 2 5 30</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>scatter nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="360">
-    <filters>106 2 5</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>nu-scatter scatter nu-fission prompt-nu-fission (n,nc) (n,n1) (n,2n)</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="271">
-    <filters>106 54</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>nu-fission prompt-nu-fission</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="272">
-    <filters>106 5</filters>
-    <nuclides>Zr90 total</nuclides>
-    <scores>nu-fission prompt-nu-fission</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="529">
-    <filters>251 2</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>total absorption (n,2n) (n,3n) (n,4n) fission nu-fission kappa-fission scatter inverse-velocity prompt-nu-fission (n,elastic) (n,level) (n,na) (n,nc) (n,gamma) (n,a) (n,Xa) heating damage-energy (n,n1) (n,a0)</scores>
-    <estimator>tracklength</estimator>
-  </tally>
-  <tally id="481">
-    <filters>251 5 6</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>scatter nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="416">
-    <filters>251 2</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="446">
-    <filters>251 2 5 30</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>scatter nu-scatter</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="541">
-    <filters>251 2 5</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>nu-scatter scatter nu-fission prompt-nu-fission (n,nc) (n,n1) (n,2n)</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="452">
-    <filters>251 54</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>nu-fission prompt-nu-fission</scores>
-    <estimator>analog</estimator>
-  </tally>
-  <tally id="453">
-    <filters>251 5</filters>
-    <nuclides>H1 total</nuclides>
-    <scores>nu-fission prompt-nu-fission</scores>
-    <estimator>analog</estimator>
-  </tally>
-</tallies>
+<model>
+  <materials>
+    <material depletable="true" id="1" name="UO2 (2.4%)">
+      <density units="g/cm3" value="10.29769" />
+      <nuclide ao="4.4843e-06" name="U234" />
+      <nuclide ao="0.00055815" name="U235" />
+      <nuclide ao="0.022408" name="U238" />
+      <nuclide ao="0.045829" name="O16" />
+    </material>
+    <material id="2" name="Zircaloy">
+      <density units="g/cm3" value="6.55" />
+      <nuclide ao="0.021827" name="Zr90" />
+      <nuclide ao="0.00476" name="Zr91" />
+      <nuclide ao="0.0072758" name="Zr92" />
+      <nuclide ao="0.0073734" name="Zr94" />
+      <nuclide ao="0.0011879" name="Zr96" />
+    </material>
+    <material id="3" name="Hot borated water">
+      <density units="g/cm3" value="0.740582" />
+      <nuclide ao="0.049457" name="H1" />
+      <nuclide ao="0.024672" name="O16" />
+      <nuclide ao="8.0042e-06" name="B10" />
+      <nuclide ao="3.2218e-05" name="B11" />
+      <sab name="c_H_in_H2O" />
+    </material>
+  </materials>
+  <geometry>
+    <cell id="1" material="1" name="Fuel" region="-1" universe="0" />
+    <cell id="2" material="2" name="Cladding" region="1 -2" universe="0" />
+    <cell id="3" material="3" name="Water" region="2 3 -4 5 -6" universe="0" />
+    <surface coeffs="0 0 0.39218" id="1" name="Fuel OR" type="z-cylinder" />
+    <surface coeffs="0 0 0.4572" id="2" name="Clad OR" type="z-cylinder" />
+    <surface boundary="reflective" coeffs="-0.63" id="3" name="left" type="x-plane" />
+    <surface boundary="reflective" coeffs="0.63" id="4" name="right" type="x-plane" />
+    <surface boundary="reflective" coeffs="-0.63" id="5" name="bottom" type="y-plane" />
+    <surface boundary="reflective" coeffs="0.63" id="6" name="top" type="y-plane" />
+  </geometry>
+  <settings>
+    <run_mode>eigenvalue</run_mode>
+    <particles>100</particles>
+    <batches>10</batches>
+    <inactive>5</inactive>
+    <source strength="1.0">
+      <space type="fission">
+        <parameters>-0.63 -0.63 -1 0.63 0.63 1</parameters>
+      </space>
+    </source>
+  </settings>
+  <tallies>
+    <filter id="383" type="material">
+      <bins>1 2 3</bins>
+    </filter>
+    <filter id="2" type="energy">
+      <bins>0.0 0.625 20000000.0</bins>
+    </filter>
+    <filter id="1" type="material">
+      <bins>1</bins>
+    </filter>
+    <filter id="5" type="energyout">
+      <bins>0.0 0.625 20000000.0</bins>
+    </filter>
+    <filter id="6" type="legendre">
+      <order>1</order>
+    </filter>
+    <filter id="30" type="legendre">
+      <order>3</order>
+    </filter>
+    <filter id="54" type="energy">
+      <bins>0.0 20000000.0</bins>
+    </filter>
+    <filter id="106" type="material">
+      <bins>2</bins>
+    </filter>
+    <filter id="251" type="material">
+      <bins>3</bins>
+    </filter>
+    <tally id="528">
+      <filters>383 2</filters>
+      <nuclides>total</nuclides>
+      <scores>flux</scores>
+      <estimator>tracklength</estimator>
+    </tally>
+    <tally id="167">
+      <filters>1 2</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>total absorption (n,2n) (n,3n) (n,4n) fission nu-fission kappa-fission scatter inverse-velocity prompt-nu-fission (n,elastic) (n,level) (n,na) (n,nc) (n,gamma) (n,a) (n,Xa) heating damage-energy (n,n1) (n,a0)</scores>
+      <estimator>tracklength</estimator>
+    </tally>
+    <tally id="540">
+      <filters>383 2</filters>
+      <nuclides>total</nuclides>
+      <scores>flux</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="119">
+      <filters>1 5 6</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>scatter nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="54">
+      <filters>1 2</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="84">
+      <filters>1 2 5 30</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>scatter nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="179">
+      <filters>1 2 5</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>nu-scatter scatter nu-fission prompt-nu-fission (n,nc) (n,n1) (n,2n)</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="90">
+      <filters>1 54</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>nu-fission prompt-nu-fission</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="91">
+      <filters>1 5</filters>
+      <nuclides>U235 total</nuclides>
+      <scores>nu-fission prompt-nu-fission</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="348">
+      <filters>106 2</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>total absorption (n,2n) (n,3n) (n,4n) fission nu-fission kappa-fission scatter inverse-velocity prompt-nu-fission (n,elastic) (n,level) (n,na) (n,nc) (n,gamma) (n,a) (n,Xa) heating damage-energy (n,n1) (n,a0)</scores>
+      <estimator>tracklength</estimator>
+    </tally>
+    <tally id="300">
+      <filters>106 5 6</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>scatter nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="235">
+      <filters>106 2</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="265">
+      <filters>106 2 5 30</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>scatter nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="360">
+      <filters>106 2 5</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>nu-scatter scatter nu-fission prompt-nu-fission (n,nc) (n,n1) (n,2n)</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="271">
+      <filters>106 54</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>nu-fission prompt-nu-fission</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="272">
+      <filters>106 5</filters>
+      <nuclides>Zr90 total</nuclides>
+      <scores>nu-fission prompt-nu-fission</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="529">
+      <filters>251 2</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>total absorption (n,2n) (n,3n) (n,4n) fission nu-fission kappa-fission scatter inverse-velocity prompt-nu-fission (n,elastic) (n,level) (n,na) (n,nc) (n,gamma) (n,a) (n,Xa) heating damage-energy (n,n1) (n,a0)</scores>
+      <estimator>tracklength</estimator>
+    </tally>
+    <tally id="481">
+      <filters>251 5 6</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>scatter nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="416">
+      <filters>251 2</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="446">
+      <filters>251 2 5 30</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>scatter nu-scatter</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="541">
+      <filters>251 2 5</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>nu-scatter scatter nu-fission prompt-nu-fission (n,nc) (n,n1) (n,2n)</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="452">
+      <filters>251 54</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>nu-fission prompt-nu-fission</scores>
+      <estimator>analog</estimator>
+    </tally>
+    <tally id="453">
+      <filters>251 5</filters>
+      <nuclides>H1 total</nuclides>
+      <scores>nu-fission prompt-nu-fission</scores>
+      <estimator>analog</estimator>
+    </tally>
+  </tallies>
+</model>