I'm inheriting from SAS.Tasks.Toolkit.SasTask in order to be able to run SAS code from within dialogs. Before using SasTask, I used to implement ISasTask and other interfaces but since SasTask itself implements these, I do not have to. The problem is that I need to continue to save/restore task state similar to how ISASTask.XmlState did it. I tried setting the XmlState property of my SasTask-derived class, but that data never gets saved. Is this a bug? Is there another way to save/restore state when deriving from SAS.Tasks.Toolkit.SasTask?