You can change the drawing order of the re-entered sources of DVE Layer Objects or nodes parented under re-entered objects using the DVE Re-entry Selection box in the Priority Editor.

To access the Priority Editor, swipe the bar at the bottom of the Media or Object menu.

Depending on how your DVE Layer object is re-entered, you can choose to display the priority of the main scene (Action), or the re-entered Front or Matte source. See Reordering Surfaces for more information on the Priority Editor.