diff --git a/core/ormlinkset.class.inc.php b/core/ormlinkset.class.inc.php
index 872b6e3bf..22c1b1f16 100644
--- a/core/ormlinkset.class.inc.php
+++ b/core/ormlinkset.class.inc.php
@@ -232,6 +232,7 @@ class ormLinkSet implements iDBObjectSetIterator, Iterator, SeekableIterator
 	{
 		$aRet = array();
 		$this->oOriginalSet->Rewind();
+		$this->oOriginalSet->OptimizeColumnLoad([$this->sClass => []]);
 		$iRow = 0;
 		while ($oObject = $this->oOriginalSet->Fetch())
 		{
@@ -321,8 +322,6 @@ class ormLinkSet implements iDBObjectSetIterator, Iterator, SeekableIterator
 	 */
 	public function Fetch()
 	{
-		$this->LoadOriginalIds();
-
 		$ret = $this->current();
 		if ($ret === false)
 		{
@@ -353,7 +352,7 @@ class ormLinkSet implements iDBObjectSetIterator, Iterator, SeekableIterator
 		if ($this->iCursor < $iPreservedCount)
 		{
 			$sId = key($this->aPreserved);
-			$oRet = MetaModel::GetObject($this->sClass, $sId);
+			$oRet = MetaModel::GetObject($this->sClass, $sId, true, true);
 		}
 		else
 		{
diff --git a/sources/Core/AttributeDefinition/AttributeLinkedSet.php b/sources/Core/AttributeDefinition/AttributeLinkedSet.php
index 0d47460dc..f84fcef0f 100644
--- a/sources/Core/AttributeDefinition/AttributeLinkedSet.php
+++ b/sources/Core/AttributeDefinition/AttributeLinkedSet.php
@@ -9,6 +9,7 @@ namespace Combodo\iTop\Core\AttributeDefinition;
 use CMDBSource;
 use Combodo\iTop\Application\UI\Links\Set\BlockLinkSetDisplayAsProperty;
 use Combodo\iTop\Form\Field\LinkedSetField;
+use Combodo\iTop\Portal\Helper\ScopeValidatorHelper;
 use Combodo\iTop\Renderer\Console\ConsoleBlockRenderer;
 use Combodo\iTop\Service\Links\LinkSetModel;
 use CoreException;
@@ -21,6 +22,7 @@ use Exception;
 use ExceptionLog;
 use IssueLog;
 use MetaModel;
+use ModuleDesign;
 use ormLinkSet;
 use ValueSetObjects;
 
@@ -154,6 +156,14 @@ class AttributeLinkedSet extends AttributeDefinition
 				$oLinkSearch->AddCondition_PointingTo($oRemoteSearch, $this->GetExtKeyToRemote());
 			}
 		}
+		//Add silo in portal context
+		if (defined('PORTAL_ID'))
+		{
+			$oModuleDesign = new ModuleDesign(PORTAL_ID);
+			$oScopeValidatorHelper = new ScopeValidatorHelper($oModuleDesign, PORTAL_ID);
+			$oScopeValidatorHelper->AddScopeToQuery($oLinkSearch, $oLinkSearch->GetClass());
+		}
+
 		$oLinks = new DBObjectSet($oLinkSearch);
 		$oLinkSet = new ormLinkSet($this->GetHostClass(), $this->GetCode(), $oLinks);