Cached SQLMap Query within TDbTransaction cancels Transaction

[godzilla]

try {
	$transaction = $con -> beginTransaction();

	$sqlMapResult = $sqlMap -> queryForList('StatementId', $param);

	$myActiveRecord1 -> value1 = $sqlMapResult -> value1;
	$myActiveRecord1 -> save();
	$myActiveRecord2 -> save();

	$transaction -> commit();
}
catch(Exception $e) {
	$transaction -> rollBack();
}

works fine until i add cacheModel attribute in SQLMap-XML.

For unkown reasons after performing "queryForList" $transaction -> commit() throws an PDOException "There is no active transaction".

Removing ActiveRecord? operations has no effects.

After removing cacheModel attribute commit works as expected.

I'm using following configuration: Apache/2.2.3 (Win32) PHP/5.2.4 MySql? 5.0.51 Prado 3.1.1