diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/building.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/building.xml
index 4181ab934435f27c935d364e0c7963fabf3c10ad..53266c8a2d7a905fab9482c41549a5c7fb0e2d62 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/building.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/building.xml
@@ -30,6 +30,7 @@
               <tuple>
                 <string>converge</string>
                 <string>diverge</string>
+                <string>freeze</string>
                 <string>solve_automatically</string>
                 <string>start_building</string>
               </tuple>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/calculating.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/calculating.xml
index 26571da5ec09d460a147d24e41b22e78a28ad056..a3ab6af58418d69cdb4463c9dd02f40e0b9e1111 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/calculating.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/calculating.xml
@@ -30,6 +30,7 @@
               <tuple>
                 <string>converge</string>
                 <string>diverge</string>
+                <string>freeze</string>
                 <string>solve_automatically</string>
                 <string>solve_divergence</string>
                 <string>solve_divergence_action</string>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/diverged.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/diverged.xml
index 5f766037225fa921c821caca68757fdb9233e67f..688c00d7080695b7296f057fcf077c87094b390a 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/diverged.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/diverged.xml
@@ -31,6 +31,7 @@
                 <string>calculate</string>
                 <string>converge</string>
                 <string>diverge</string>
+                <string>freeze</string>
                 <string>solve_automatically</string>
                 <string>solve_divergence</string>
                 <string>solve_divergence_action</string>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/draft.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/draft.xml
index 29db4dd2abc44704fb3e9d06112e79ca0f63d78c..c6444fc45ce4914a3604457a8c2bd939e7ce66d1 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/draft.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/draft.xml
@@ -28,6 +28,7 @@
             <key> <string>transitions</string> </key>
             <value>
               <tuple>
+                <string>freeze</string>
                 <string>start_building</string>
               </tuple>
             </value>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/frozen.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/frozen.xml
new file mode 100644
index 0000000000000000000000000000000000000000..b3d62f51690ba75045a7965e3c9cfa5a9b6a8590
--- /dev/null
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/frozen.xml
@@ -0,0 +1,72 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="StateDefinition" module="Products.DCWorkflow.States"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>description</string> </key>
+            <value> <string>The document is no longer simulated.</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>frozen</string> </value>
+        </item>
+        <item>
+            <key> <string>permission_roles</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Frozen</string> </value>
+        </item>
+        <item>
+            <key> <string>transitions</string> </key>
+            <value>
+              <tuple/>
+            </value>
+        </item>
+        <item>
+            <key> <string>type_list</string> </key>
+            <value>
+              <tuple/>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="PersistentMapping" module="Persistence.mapping"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>data</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>Add portal content</string> </key>
+                    <value>
+                      <tuple/>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>Modify portal content</string> </key>
+                    <value>
+                      <tuple>
+                        <string>Manager</string>
+                      </tuple>
+                    </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solved.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solved.xml
index 79f1615fb9d4311656774d13c82a8d7bf8141439..77e75e1876ec49b9b46f21575e70223e0f89c902 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solved.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solved.xml
@@ -31,6 +31,7 @@
                 <string>calculate</string>
                 <string>converge</string>
                 <string>diverge</string>
+                <string>freeze</string>
                 <string>solve_automatically</string>
                 <string>start_building</string>
               </tuple>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solving.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solving.xml
index fe57912c1a4d13a45c93ed18525f2b7e3a2ed019..50e8eaf7b54347fe103087fd990c30184b234744 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solving.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/states/solving.xml
@@ -30,6 +30,7 @@
               <tuple>
                 <string>converge</string>
                 <string>diverge</string>
+                <string>freeze</string>
               </tuple>
             </value>
         </item>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/transitions/freeze.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/transitions/freeze.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f85abad44f9ce04d5604cdb924469e03220a8c2d
--- /dev/null
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/delivery_causality_workflow/transitions/freeze.xml
@@ -0,0 +1,79 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="TransitionDefinition" module="Products.DCWorkflow.Transitions"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>actbox_category</string> </key>
+            <value> <string>workflow</string> </value>
+        </item>
+        <item>
+            <key> <string>actbox_icon</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>actbox_name</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>actbox_url</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>after_script_name</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value> <string>Make the document no longer simulated.</string> </value>
+        </item>
+        <item>
+            <key> <string>guard</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>freeze</string> </value>
+        </item>
+        <item>
+            <key> <string>new_state_id</string> </key>
+            <value> <string>frozen</string> </value>
+        </item>
+        <item>
+            <key> <string>script_name</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Freeze</string> </value>
+        </item>
+        <item>
+            <key> <string>trigger_type</string> </key>
+            <value> <int>2</int> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="Guard" module="Products.DCWorkflow.Guard"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>permissions</string> </key>
+            <value>
+              <tuple>
+                <string>Modify portal content</string>
+              </tuple>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/ERP5Defaults.py b/product/ERP5/ERP5Defaults.py
index 05c351b7b8fe1b3270d93144eafe97cc4659081d..13a4b0157a44ea59babc88a623675ba7c306b5c2 100644
--- a/product/ERP5/ERP5Defaults.py
+++ b/product/ERP5/ERP5Defaults.py
@@ -224,3 +224,4 @@ portal_current_inventory_state_list = ('delivered', 'started', 'stopped', 'invoi
 
 portal_updatable_amortisation_transaction_state_list = ('draft',)
 
+portal_frozen_causality_state_list = ('frozen',)
diff --git a/product/ERP5/ERP5Site.py b/product/ERP5/ERP5Site.py
index bcaed78514ddbd4b1abf2e6eb3a17142b97f2220..af4c966e9a6e9a6399eddb690fc7945aefca4786 100644
--- a/product/ERP5/ERP5Site.py
+++ b/product/ERP5/ERP5Site.py
@@ -1287,6 +1287,14 @@ class ERP5Site(FolderMixIn, CMFSite, CacheCookieMixin):
     return self._getPortalConfiguration(
         'portal_updatable_amortisation_transaction_state_list')
 
+  security.declareProtected(Permissions.AccessContentsInformation,
+                            'getPortalFrozenCausalityStateList')
+  def getPortalFrozenCausalityStateList(self):
+    """
+      Return all causality states where the document is no longer simulated.
+    """
+    return self._getPortalConfiguration('portal_frozen_causality_state_list')
+
   security.declareProtected(Permissions.AccessContentsInformation,
                             'getPortalGroupedSimulationStateList')
   def getPortalGroupedSimulationStateList(self):
diff --git a/product/ERP5/mixin/rule.py b/product/ERP5/mixin/rule.py
index c63c9486519000b099f91b896c95a1bf09e94864..e5b814e0af8d3685b3b4815f37a56c322b019b43 100644
--- a/product/ERP5/mixin/rule.py
+++ b/product/ERP5/mixin/rule.py
@@ -495,6 +495,8 @@ class SimulableMixin(Base):
 
     See _updateSimulation for accepted parameters.
     """
+    if self.getCausalityState() in self.getPortalFrozenCausalityStateList():
+      return
     tv = getTransactionalVariable()
     key = 'SimulableMixin.updateSimulation', self.getUid()
     item_list = kw.items()