Update crossSectionControl dict for new xsType.

When new XS Types are created by the cross section group manager,
initialize them with the same settings as the original XS ID from
which they were created.

armi/physics/neutronics/crossSectionGroupManager.py

@@ -1019,8 +1019,10 @@ def _addXsGroupsFromBlocks(self, blockCollectionsByXsGroup, blockList):
         for b in blockList:
             xsID = b.getMicroSuffix()
             xsSettings = self._initializeXsID(xsID)
+            # xsSettings.averageByComponent = True
             blockCollectionType = blockCollectionFactory(
-                xsSettings, self.r.blueprints.allNuclidesInProblem
+                xsSettings,
+                self.r.blueprints.allNuclidesInProblem,
             )
             group = blockCollectionsByXsGroup.get(xsID, blockCollectionType)
             group.append(b)
@@ -1271,6 +1273,12 @@ def _getModifiedReprBlocks(self, blockList, originalRepresentativeBlocks):
                 if b.getMicroSuffix() == origXSID:
                     b.p.xsType = newXSType
 
+            # copy XS settings to new XS ID
+            self.cs[CONF_CROSS_SECTION][newXSID] = copy.deepcopy(
+                self.cs[CONF_CROSS_SECTION][origXSID]
+            )
+            self.cs[CONF_CROSS_SECTION][newXSID].xsID = newXSID
+
         return modifiedReprBlocks, origXSIDsFromNew
 
     def getNextAvailableXsTypes(self, howMany=1, excludedXSTypes=None):