If I hold a battlefield at the start of turn and score the holding point, then move my units off and back onto it, does it trigger an Open showdown?

Ruling: Yes, moving units back onto a battlefield you previously held triggers an Open showdown, but you will not score another holding point.

Nuances:

• You only score the holding point once (at the start of turn when you initially held it)
• The showdown still occurs when you move units back onto the battlefield