Index: branches/RC/core/units/general/helpers/controls/edit_picker_helper.php
===================================================================
diff -u -N -r10780 -r11271
--- branches/RC/core/units/general/helpers/controls/edit_picker_helper.php	(.../edit_picker_helper.php)	(revision 10780)
+++ branches/RC/core/units/general/helpers/controls/edit_picker_helper.php	(.../edit_picker_helper.php)	(revision 11271)
@@ -22,6 +22,10 @@
 				return ;
 			}
 
+			if ($storage_field != $event->getEventParam('link_to_field')) {
+				return ;
+			}
+
 			$object =& $event->getObject();
 			/* @var $object kDBList */
 
@@ -38,6 +42,11 @@
 				$filter_clause = ($event->Special == 'selected') ? 'FALSE' : 'TRUE';
 			}
 
+			$constrain = $this->_getConstrain($main_object, $storage_field, 'filter');
+			if ($constrain) {
+				$filter_clause .= ' AND (' . $constrain . ')';
+			}
+
 			$object->addFilter('edit_picker_filter', $filter_clause);
 		}
 
@@ -60,6 +69,12 @@
 			$sql = 'SELECT '.$sub_prefix_field.'
 					FROM '.$this->getTable($sub_prefix, $object->IsTempTable()).'
 					WHERE '.$foreign_key.' = '.$object->GetID();
+
+			$constrain = $this->_getConstrain($object, $store_field, 'load');
+			if ($constrain) {
+				$sql .= ' AND (' . $sub_prefix_field . ' IN (' . $constrain . '))';
+			}
+
 			$selected_items = array_unique($this->Conn->GetCol($sql));
 
 			$object->SetDBField($store_field, $selected_items ? '|'.implode('|', $selected_items).'|' : '');
@@ -89,6 +104,12 @@
 			$sql = 'SELECT ' . $sub_prefix_field . '
 					FROM ' . $sub_table . '
 					WHERE '.$foreign_key.' = '.$main_object->GetID();
+
+			$constrain = $this->_getConstrain($main_object, $store_field, 'save');
+			if ($constrain) {
+				$sql .= ' AND (' . $sub_prefix_field . ' IN (' . $constrain . '))';
+			}
+
 			$old_values = $this->Conn->GetCol($sql);
 
 			// 2. get new values from form
@@ -126,6 +147,23 @@
 				}
 			}
 		}
+
+		function _getConstrain(&$object, $store_field, $mode = 'filter')
+		{
+			$field_options = $object->GetFieldOptions($store_field);
+			$constrain = array_key_exists('option_constrain', $field_options) ? $field_options['option_constrain'] : false;
+
+			if ($mode == 'filter') {
+				// filter on edit form
+				return $constrain;
+			}
+			elseif ($constrain) {
+				// load or save
+				return sprintf($field_options['options_sql'], $field_options['option_key_field']);
+			}
+
+			return false;
+		}
 	}
 
 ?>
\ No newline at end of file
Index: branches/RC/core/admin_templates/incs/form_blocks.tpl
===================================================================
diff -u -N -r11226 -r11271
--- branches/RC/core/admin_templates/incs/form_blocks.tpl	(.../form_blocks.tpl)	(revision 11226)
+++ branches/RC/core/admin_templates/incs/form_blocks.tpl	(.../form_blocks.tpl)	(revision 11271)
@@ -810,17 +810,17 @@
 							<option value="<inp2:Field name="$key_field" />"><inp2:Field name="$value_field" /></option>
 						</inp2:m_DefineElement>
 
-						<select multiple id="<inp2:{$prefix}_InputName name="$field" />_selected" style="<inp2:m_param name="style"/>" size="<inp2:m_param name="size"/>">
-							<inp2:$optprefix.selected_PrintList render_as="picker_option_block" key_field="$option_key_field" value_field="$option_value_field" per_page="-1" link_to_prefix="$prefix" />
+						<select multiple id="<inp2:$prefix_InputName name="$field" />_selected" style="<inp2:m_param name="style"/>" size="<inp2:m_param name="size"/>">
+							<inp2:$optprefix.selected_PrintList render_as="picker_option_block" key_field="$option_key_field" value_field="$option_value_field" per_page="-1" requery="1" link_to_prefix="$prefix" link_to_field="$field"/>
 						</select>
 					</td>
 					<td align="center">
 						<img src="img/icons/icon_left.gif" id="<inp2:{$prefix}_InputName name="$field" />_move_left_button"/><br />
 						<img src="img/icons/icon_right.gif" id="<inp2:{$prefix}_InputName name="$field" />_move_right_button"/>
 					</td>
 					<td>
-						<select multiple id="<inp2:{$prefix}_InputName name="$field" />_available" style="<inp2:m_param name="style"/>" size="<inp2:m_param name="size"/>">
-							<inp2:$optprefix.available_PrintList render_as="picker_option_block" key_field="$option_key_field" value_field="$option_value_field" per_page="-1" link_to_prefix="$prefix" />
+						<select multiple id="<inp2:$prefix_InputName name="$field" />_available" style="<inp2:m_param name="style"/>" size="<inp2:m_param name="size"/>">
+							<inp2:$optprefix.available_PrintList render_as="picker_option_block" key_field="$option_key_field" value_field="$option_value_field" requery="1" per_page="-1" link_to_prefix="$prefix" link_to_field="$field"/>
 						</select>
 					</td>
 				</tr>
Index: branches/RC/core/kernel/kbase.php
===================================================================
diff -u -N -r10994 -r11271
--- branches/RC/core/kernel/kbase.php	(.../kbase.php)	(revision 10994)
+++ branches/RC/core/kernel/kbase.php	(.../kbase.php)	(revision 11271)
@@ -573,25 +573,36 @@
 		return preg_match('/[.(]/', $field_expr) ? $field_expr : '`'.$field_expr.'`';
 	}
 
+	/**
+	 * Replaces current language id in given field options
+	 *
+	 * @param string $field_name
+	 * @param Array $field_option_names
+	 */
+	function _replaceLanguageId($field_name, $field_option_names)
+	{
+		$language_id = $this->Application->GetVar('m_lang');
+
+		$field_options =& $this->Fields[$field_name];
+		foreach ($field_option_names as $option_name) {
+			$field_options[$option_name] = str_replace('%2$s', $language_id, $field_options[$option_name]);
+		}
+	}
+
 	function PrepareFieldOptions($field_name)
 	{
 		$field_options =& $this->Fields[$field_name];
 		if (array_key_exists('options_sql', $field_options) ) {
-			// replace with query result
-			$language_id = $this->Application->GetVar('m_lang');
+			// get options based on given sql
+			$replace_options = Array ('option_title_field', 'option_key_field', 'options_sql');
+			$this->_replaceLanguageId($field_name, $replace_options);
 
 			$select_clause = $this->escapeField($field_options['option_title_field']) . ',' . $this->escapeField($field_options['option_key_field']);
-
-			$sql = sprintf($field_options['options_sql'], $select_clause, $language_id);
-			$sql = str_replace('%2$s', $language_id, $sql); // replace langauge in field names
-
-			$options_hash = getArrayValue($field_options,'options');
-			if($options_hash === false) $options_hash = Array();
-
+			$sql = sprintf($field_options['options_sql'], $select_clause);
 			$dynamic_options = $this->Conn->GetCol($sql, $field_options['option_key_field']);
-			$field_options['options'] = array_merge_recursive2($options_hash, $dynamic_options);
 
-			unset($field_options['options_sql']);
+			$options_hash = array_key_exists('options', $field_options) ? $field_options['options'] : Array ();
+			$field_options['options'] = array_merge_recursive2($options_hash, $dynamic_options);
 		}
 	}