Hello,
What happens, if an attachment is being moved? An attachment is a support card, so it can be moved to an other zone, for example by the Quest "Visit the haunted city":
Action: When you play a development from your hand, put a resource token on this card if a unit is questing here. Action: Discard 2 resources on this card to move a target unit or support card from its current zone to another zone controlled by the same player.
What happens with the attachment then? It is attached to an other card, if so, who decides to wich one? What ahppens if there is no unit in te target zone (i think it will be destroyed).
Or will it be destroyed anyway?