Unfortunately I am not able to reproduce the behavior your are describing. I've converted the current thread to private in order to allow you to upload a sample application reproducing the issue in order to help us identifying the problem.
For you convenience I am attaching the application I used to test your case.
I am looking forward for your additional input.
OpenAccess ORM is now Telerik Data Access
. For more information on the new names, please, check out the Telerik Product Map