NCE does NOT recommend using any toggle switch for any track power connection. The possibility of mechanical failure, human error, and momentary cross-connection is a recipe for headaches and disaster.
When converting to DCC, you must remove mechanical devices that switch or control track power. This includes all of the old Atlas slide switches as well.
Remove all of these types of devices as well as any light bulbs or LEDS directly connected to track power. This includes light track bumpers.