Actually, the documentation didn't change with the last update, but the StrataFrame proprietary concurrency was removed from the last version. It was inefficient and wasn't as fast as it should have been. It has been replaced with the GetServerValuesOnConcurrencyException property. So, if you're using the timestamp concurrency, and there is a concurrency exception, the DataLayer will retrieve the server values (so you can compare them and re-save the row) when you get a concurrency exception.

Does the UpdateConcurrencyType on an object at the form level override the AutoHandleCollisions setting? In other words if UpdateConcurrencyType is set to OptimisticTimeStamp for an object on a form and AutoHandleCollisions is set to true, which type of concurrency is enforced on the object, OptimisticTimeStamp or StrataFrame Proprietary?