--- class.t3lib_tcemain.php
+++ class.t3lib_tcemain.php
@@ -4453,7 +4453,7 @@
 	 * @return	void
 	 */
 	function version_swap($table,$id,$swapWith,$swapIntoWS=0)	{
-		global $TCA;
+		global $TCA, $TYPO3_CONF_VARS;;
 
 			// First, check if we may actually edit the online record
 		if ($this->checkRecordUpdateAccess($table,$id))	{
@@ -4473,6 +4473,14 @@
 
 									// Check if the swapWith record really IS a version of the original!
 								if ((int)$swapVersion['pid']==-1 && (int)$curVersion['pid']>=0 && !strcmp($swapVersion['t3ver_oid'],$id))	{
+									
+									// First prepare user defined objects (if any) for hooks which extend this function:
+									$hookObjectsArr = array();
+									if (is_array ($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processVersionSwapClass'])) {
+										foreach ($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processVersionSwapClass'] as $classRef) {
+											$hookObjectsArr[] = &t3lib_div::getUserObj($classRef);
+										}
+									}
 
 										// Lock file name:
 									$lockFileName = PATH_site.'typo3temp/swap_locking/'.$table.':'.$id.'.ser';
@@ -4571,7 +4579,14 @@
 												unlink($lockFileName);
 											}
 										}
-
+										
+										// Hook: processSwap_postProcessSwap
+										foreach($hookObjectsArr as $hookObj)	{
+											if (method_exists($hookObj, 'processSwap_postProcessSwap')) {
+												$hookObj->processSwap_postProcessSwap($table, $id, $swapWith, $swapIntoWS, $this);
+											}
+										}
+										
 										if (!count($sqlErrors))	{
 
 												// If a moving operation took place...: