Dan What was your rational behind making non-persistent fields non-editable?
For example, I have a Task object that is created to change a Plan's details. It is coded so that the get and modify method in the Task delegate to the Plan (there is no need to persist this information twice). Marking the get method as NotPersisted causes the field to show up as uneditable (though I didn't also mark it as Disabled). It transpires that the NotPersistableFacet is a DisablingInteractionAdvisor and this is what prevents it from being edited.
Regards Rob
