Accidentally choose wrong bounty target? What should I do?

Mistake happen. I choose a target which I already did few days ago. It should be dust but tape chee'ilth mistakenly.

Comments

If I don't defeat Dust, I may loose 4000 7★ shard

Damm, no single reply 😶‍🌫️

Damm, no single reply 😶‍🌫️

Except all those replies, in all those other side-quest posts.
One is..

https://forums.playcontestofchampions.com/en/discussion/393255/bug-in-dark-bounty-target-2#latest

There are extra keys in last week.
As well as being able to do trick (see other posts) about replaying to just kill targets.