Index: trunk/core/kernel/utility/unit_config_reader.php
===================================================================
diff -u -r4785 -r4788
--- trunk/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 4785)
+++ trunk/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 4788)
@@ -288,9 +288,15 @@
 					$hook['HookToPrefix'] = $config['Prefix']; // new: set hooktoprefix to current prefix if not set
 				}
 
-				if (isset($config['ParentPrefix']) && $hook['HookToPrefix'] == '#PARENT#') {
+				if (isset($config['ParentPrefix'])) {
 					// new: allow to set hook to parent prefix what ever it is
-					$hook['HookToPrefix'] = $config['ParentPrefix'];
+					if ($hook['HookToPrefix'] == '#PARENT#') {
+						$hook['HookToPrefix'] = $config['ParentPrefix'];	
+					}
+					
+					if ($hook['DoPrefix'] == '#PARENT#') {
+						$hook['DoPrefix'] = $config['ParentPrefix'];	
+					}
 				}
 
 				$do_prefix = $hook['DoPrefix'] == '' ? $config['Prefix'] : $hook['DoPrefix'];