diff --git a/py/orbit/lattice/AccNode.py b/py/orbit/lattice/AccNode.py
index 1a29276f..fdc145dc 100644
--- a/py/orbit/lattice/AccNode.py
+++ b/py/orbit/lattice/AccNode.py
@@ -168,7 +168,7 @@ def getNumberOfBodyChildren(self):
             nChildren = nChildren + len(arr[0]) + len(arr[1])
         return nChildren
 
-    def addChildNode(self, node, place, part_index=0, place_in_part=AccActionsContainer.BEFORE):
+    def addChildNode(self, node, place, part_index=0, place_in_part=AccActionsContainer.AFTER):
         """
         Method. Adds a child node to the list defined by place and
         (maybe) part index and place in the part (before or after).
@@ -192,7 +192,10 @@ def addChildNode(self, node, place, part_index=0, place_in_part=AccActionsContai
                 msg = msg + os.linesep
                 orbitFinalize(msg)
             nodes = self.__childNodesArr[place][part_index][place_in_part]
-        nodes.append(node)
+        if(place_in_part == AccActionsContainer.AFTER):
+            nodes.append(node)
+        else:
+            nodes.insert(0, node)
 
     def getChildNodes(self, place, part_index=0, place_in_part=AccActionsContainer.BEFORE):
         """
diff --git a/py/orbit/py_linac/lattice/LinacTransportMatrixGenNodes.py b/py/orbit/py_linac/lattice/LinacTransportMatrixGenNodes.py
index e66468fe..531a4355 100755
--- a/py/orbit/py_linac/lattice/LinacTransportMatrixGenNodes.py
+++ b/py/orbit/py_linac/lattice/LinacTransportMatrixGenNodes.py
@@ -228,7 +228,10 @@ def addTrMatrixGenNodes(self, accLattice, node_or_nodes, place=MarkerLinacNode.E
         # -----------------------------
         for node in nodes:
             trMatrxGenNode = LinacTrMatrixGenNode(self, node.getName() + ":trMatrx")
-            node.addChildNode(trMatrxGenNode, place)
+            if(place == MarkerLinacNode.ENTRANCE):
+                node.addChildNode(trMatrxGenNode, place, place_in_part = AccActionsContainer.BEFORE)
+            else:
+                node.addChildNode(trMatrxGenNode, place, place_in_part = AccActionsContainer.AFTER)
         # ----- set up the position of the TrMatrix nodes
         actions = AccActionsContainer()