Con este detonador lo pude solucionar:
Aunque al parecer cuando matas una mina de oro de los elfos nocturnos, realmente la destruyes

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[gui]Minas de Oro Extras
Acontecimientos
Map initialization
Condiciones
Acciones
Grupo de jugadores - Pick every player in Jugadores_Aliados and do (Actions)
Bucle: Acciones
Grupo de unidad - Pick every unit in (Units within 1100.00 of ((Picked player) start location)) and do (Actions)
Bucle: Acciones
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
Si: Condiciones
(Race of (Picked player)) Igual a Muerto viviente
(Unit-type of (Picked unit)) Igual a Mina de oro
Entonces: Acciones
Unidad - Replace (Picked unit) with a Mina de oro encantada using El anciano familiar de la unidad life and mana
Unidad - Change ownership of (Last replaced unit) to (Picked player) and Cambiar color
Otros: Acciones
Grupo de unidad - Pick every unit in (Units within 1100.00 of ((Picked player) start location)) and do (Actions)
Bucle: Acciones
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
Si: Condiciones
(Race of (Picked player)) Igual a Elfo de la noche
(Unit-type of (Picked unit)) Igual a Mina de oro
Entonces: Acciones
Unidad - Replace (Picked unit) with a Mina de oro entramada using El anciano familiar de la unidad life and mana
Unidad - Change ownership of (Last replaced unit) to (Picked player) and Cambiar color
Otros: Acciones
[/gui]