What happenes to a Clan Moulder's Elite with a Choppa attachement when it is moved from the battlefield to the kingdom by Wilhelm of the Osterknacht?

Does the player who controlls the Clan Moulder's Elite gain 4 resources in his next kingdom phase? Or is the Clan Moulder's Elite destroyed?

BZ Only on Clan Moulder is the playing restriction. Once in play, you can move them to any zone, they still contribute their P as normal.

Only exception are hero units. You can not move hero units to another zone with a pre-existing hero unit. The ability fizzles