Self-tracking entities original values

Question

Self-tracking entities do not save original properties values. So all properties are marked as modified when you call ApplyChanges. But I need to log the properties which actually changed. I tried to use ApplyOriginalValues, but in this case AcceptChanges throws an exception as finds entities duplicates. Are there any ways to make STE keep original values?

Answer 1

Have found a solution here: http://social.msdn.microsoft.com/Forums/en-US/adonetefx/thread/cda357cf-e69b-42d0-88bd-e8a598bad25e