Unfortunately this feature is not supported by Telerik OpenAccess ORM. Once the data is loaded, it will not automatically be updated.
There is functionality in SqlServer to handle such scenarios, see this link for details, but we do not provide this functionality out-of-the-box since this is very dependent to the respective backend. The Oracle way to do such things can be found here.
Feel free to ask if you have any other question.
the Telerik team
Telerik OpenAccess ORM Meets ASP.NET Web API. Read more.