BTW, here is a deep copy approach:

''' <summary>
''' Using generics will solve some performance issues
''' </summary>
''' <typeparam name="T"></typeparam>
''' <param name="item"></param>
''' <returns></returns>
Public Shared Function DeepCopy(Of T)(item As T) As T
	Dim formatter As New BinaryFormatter()
	Dim stream As New MemoryStream()
	formatter.Serialize(stream, item)
	stream.Seek(0, SeekOrigin.Begin)
	Dim result As T = DirectCast(formatter.Deserialize(stream), T)
	stream.Close()
	Return result
End Function

Do you think I should have used a deep copy instead to avoid such situation, assuming the problem I am facing is in fact due that this is not a real copy of everything included in oApp?