When you use Charm to move an enemy unit to a battlefield you control, is that unit the attacker or defender?

Ruling: When you use Charm to move an enemy unit to a battlefield you control, that unit is the attacker. The unit moved to contest the battlefield you control, regardless of what effect caused that move to happen.

Nuances:

• This differs from Ride the Wind scenarios where if you initially move to contest an open battlefield and your opponent uses Ride the Wind in response, you remain the attacker because you were the one who applied contested first.