Index: t3lib/class.t3lib_transferdata.php
===================================================================
--- t3lib/class.t3lib_transferdata.php	(revision 4016)
+++ t3lib/class.t3lib_transferdata.php	(working copy)
@@ -193,7 +193,7 @@
 									// Gets the list of fields to copy from the previous record.
 								$fArr=t3lib_div::trimExplode(',',$TCA[$table]['ctrl']['useColumnsForDefaultValues'],1);
 								while(list(,$theF)=each($fArr))	{
-									if (isset($TCA[$table]['columns'][$theF]))	{
+									if (isset($TCA[$table]['columns'][$theF]) && !isset($newRow[$theF]))	{
 										$newRow[$theF]=$row[$theF];
 									}
 								}