diff --git a/application/cmdbabstract.class.inc.php b/application/cmdbabstract.class.inc.php
index 2ffdcc311..bbfb67251 100644
--- a/application/cmdbabstract.class.inc.php
+++ b/application/cmdbabstract.class.inc.php
@@ -2944,10 +2944,10 @@ EOF
 	 * Updates the object from a flat array of values
 	 * @param $aAttList array $aAttList array of attcode
 	 * @param $aErrors array Returns information about slave attributes
-	 * @param $sTargetState string Target state for which to evaluate the writeable attributes (=current state is empty)
+	 * @param $aAttFlags array Attribute codes => Flags to use instead of those from the MetaModel
 	 * @return array of attcodes that can be used for writing on the current object
 	 */
-	public function GetWriteableAttList($aAttList, &$aErrors, $sTargetState = '')
+	public function GetWriteableAttList($aAttList, &$aErrors, $aAttFlags = array())
 	{
 		if (!is_array($aAttList))
 		{
@@ -2956,14 +2956,19 @@ EOF
 			// WARNING: if you change this also check the functions DisplayModifyForm and DisplayCaseLog
 			foreach(MetaModel::ListAttributeDefs(get_class($this)) as $sAttCode => $oAttDef)
 			{
-				if ($this->IsNew())
+
+			    if(array_key_exists($sAttCode, $aAttFlags))
+                {
+                    $iFlags = $aAttFlags[$sAttCode];
+                }
+				elseif ($this->IsNew())
 				{
 					$iFlags = $this->GetInitialStateAttributeFlags($sAttCode);
 				}
 				else
 				{
 					$aVoid = array();
-					$iFlags = $this->GetAttributeFlags($sAttCode, $aVoid, $sTargetState);
+					$iFlags = $this->GetAttributeFlags($sAttCode, $aVoid);
 				}
 				if ($oAttDef instanceof AttributeCaseLog)
 				{
@@ -2979,15 +2984,19 @@ EOF
 		foreach($aAttList as $sAttCode)
 		{
 			$oAttDef = MetaModel::GetAttributeDef(get_class($this), $sAttCode);
-			
-			if ($this->IsNew())
+
+            if(array_key_exists($sAttCode, $aAttFlags))
+            {
+                $iFlags = $aAttFlags[$sAttCode];
+            }
+            elseif ($this->IsNew())
 			{
 				$iFlags = $this->GetInitialStateAttributeFlags($sAttCode);
 			}
 			else
 			{
 				$aVoid = array();
-				$iFlags = $this->GetAttributeFlags($sAttCode, $aVoid, $sTargetState);
+				$iFlags = $this->GetAttributeFlags($sAttCode, $aVoid);
 			}
 			if ($oAttDef->IsWritable())
 			{
@@ -3172,7 +3181,7 @@ EOF
 	/**
 	 * Updates the object from the POSTed parameters (form)
 	 */
-	public function UpdateObjectFromPostedForm($sFormPrefix = '', $aAttList = null, $sTargetState = '')
+	public function UpdateObjectFromPostedForm($sFormPrefix = '', $aAttList = null, $aAttFlags = array())
 	{
 		if (is_null($aAttList))
 		{
@@ -3280,7 +3289,7 @@ EOF
 
 		$aErrors = array();
 		$aFinalValues = array();
-		foreach($this->GetWriteableAttList(array_keys($aValues), $aErrors, $sTargetState) as $sAttCode => $oAttDef)
+		foreach($this->GetWriteableAttList(array_keys($aValues), $aErrors, $aAttFlags) as $sAttCode => $oAttDef)
 		{
 			$aFinalValues[$sAttCode] = $aValues[$sAttCode];
 		}
@@ -3302,7 +3311,7 @@ EOF
 	/**
 	 * Updates the object from a given page argument
 	 */
-	public function UpdateObjectFromArg($sArgName, $aAttList = null, $sTargetState = '')
+	public function UpdateObjectFromArg($sArgName, $aAttList = null, $aAttFlags = array())
 	{
 		if (is_null($aAttList))
 		{
@@ -3320,7 +3329,7 @@ EOF
 
 		$aErrors = array();
 		$aFinalValues = array();
-		foreach($this->GetWriteableAttList(array_keys($aValues), $aErrors, $sTargetState) as $sAttCode => $oAttDef)
+		foreach($this->GetWriteableAttList(array_keys($aValues), $aErrors, $aAttFlags) as $sAttCode => $oAttDef)
 		{
 			$aFinalValues[$sAttCode] = $aValues[$sAttCode];
 		}
diff --git a/application/portalwebpage.class.inc.php b/application/portalwebpage.class.inc.php
index 0e454f032..f7321f856 100644
--- a/application/portalwebpage.class.inc.php
+++ b/application/portalwebpage.class.inc.php
@@ -816,7 +816,7 @@ EOF
 		$sClass = get_class($oObj);
 
 		$sStimulus = trim(utils::ReadPostedParam('apply_stimulus', ''));
-		$sTargetState = '';
+		$aExpectedAttributes = array();
 		if (!empty($sStimulus))
 		{
 			// Compute the target state
@@ -826,10 +826,10 @@ EOF
 			{
 				throw new ApplicationException(Dict::Format('UI:Error:Invalid_Stimulus_On_Object_In_State', $sStimulus, $oObj->GetName(), $oObj->GetStateLabel()));
 			}
-			$sTargetState = $aTransitions[$sStimulus]['target_state'];
-		}
+			$aExpectedAttributes = $oObj->GetTransitionAttributes($sStimulus /*, current state*/);
+        }
 			
-		$oObj->UpdateObjectFromPostedForm('' /* form prefix */, $aAttList, $sTargetState);
+		$oObj->UpdateObjectFromPostedForm('' /* form prefix */, $aAttList, $aExpectedAttributes);
 
 		// Optional: apply a stimulus
 		//
diff --git a/pages/UI.php b/pages/UI.php
index 6ef084754..ba8362efb 100644
--- a/pages/UI.php
+++ b/pages/UI.php
@@ -1375,7 +1375,7 @@ EOF
 							}
 						}
 						
-						$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $sTargetState);
+						$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $aExpectedAttributes);
 						
 						if (count($aErrors) == 0)
 						{
@@ -1496,7 +1496,7 @@ EOF
 					}
 				}
 				
-				$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $sTargetState);				
+				$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $aExpectedAttributes);
 				
 				if (count($aErrors) == 0)
 				{
@@ -1513,7 +1513,7 @@ EOF
 						{
 							// Rollback to the previous state... by reloading the object from the database and applying the modifications again
 							$oObj = MetaModel::GetObject(get_class($oObj), $oObj->GetKey());
-							$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $sTargetState);
+							$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $aExpectedAttributes);
 							$sIssues = $e->getMessage();
 						}
 					}
diff --git a/synchro/synchrodatasource.class.inc.php b/synchro/synchrodatasource.class.inc.php
index d1f59b540..7ecfc057f 100644
--- a/synchro/synchrodatasource.class.inc.php
+++ b/synchro/synchrodatasource.class.inc.php
@@ -514,9 +514,9 @@ EOF
 		return parent::GetAttributeFlags($sAttCode, $aReasons, $sTargetState);
 	}
 		
-	public function UpdateObjectFromPostedForm($sFormPrefix = '', $sAttList = null, $sTargetState = '')
+	public function UpdateObjectFromPostedForm($sFormPrefix = '', $sAttList = null, $aAttFlags = array())
 	{
-		parent::UpdateObjectFromPostedForm($sFormPrefix, $sAttList, $sTargetState);
+		parent::UpdateObjectFromPostedForm($sFormPrefix, $sAttList, $aAttFlags);
 		// And now read the other post parameters...
 		$oAttributeSet = $this->Get('attribute_list');
 		$aAttributes = array();