Whoops! spoke too soon. I'm using a grid so I'd like to update the Modified fields when they change a row. So if they move to another row if they made any changes to that row I'd need to update those fields before they moved. So I thought I would use the CheckRulesOnCurrentRow method in the BO.
So... my next questions are...
Is there a dirty property for each record i could check to determine whether I need to update these fields?
Am I correct in my approach here?