The obvious difference is that the Submit does a save on the datasource, however, there is a save property that can be set to false so the datasource is not saved. So at that point are they both the same? I have an XPage with several datasources and when an action button is clicked there is a fairly significant amount of processing that is done, then some (not all) of the datasources are saved. They must be saved in a specific order or there is the possibility of a scheduled agent creating a save/rep conflict (the probablity is pretty low but then Murphy comes along).

So with all other things being equal does it make any difference if it is a simple action button or a Submit button with save=false?