delete mirror not working

Hello,
I have set a mirror between eth12 and output eth10 and between eth10 and output eth11.

Then, I have deleted the mirror between eth10 and eth11. But surprisingly the mirror continues working and i get the same output in eth10 and eth11.

Do you have any idea why this could be happening?

vyos@vyos# show interfaces ethernet eth10
address 10.51.241.5/28
duplex auto
hw-id 52:54:00:21:ca:32
mirror eth11
smp_affinity auto
speed auto

[edit]
vyos@vyos# show interfaces ethernet eth11
address 10.51.241.21/28
duplex auto
hw-id 52:54:00:dd:3c:33
smp_affinity auto
speed auto

[edit]
vyos@vyos# show interfaces ethernet eth12
duplex auto
hw-id 52:54:00:52:20:a4
mirror eth10
smp_affinity auto
speed auto
vif 1011 {
address 172.16.1.1/24
}

[edit]