When running Get-PendingExports -MA xxx -Delta and inspecting the .Attributes["xxx].Values collection, it's not clear what the old and new values are in an update scenario. I thought there was a convention in use, i.e. first value was old and second value was new, but this isn't the case, sometimes they get reversed and show different to how you view the object in the GUI.

Am I doing anything wrong? Is there a way to determine old and new value?