[General] How to summon an Undead goldmine on a different building than a regular goldmine?

[Barade]

Greetings,
I have another building which has the Goldmine ability and I want acolytes to summon a goldmine on it. However, it seems to be impossible although the night elf tree is able to haunt the building as goldmine.

Is it somehow possible to achieve this?

 

[Warseeker]

Stats - Can Build On = True

 

[Barade]

thx