Main mirror and unsticking mirrors in Yandex webmaster?

Question

Search Engine Optimization

I can't understand Yandex point 1 "Moving a site after rejecting the Host directive"
1. Add a new domain to Webmaster (including a site via HTTPS if the move is made to HTTPS) and make sure that it is not glued into a group of mirrors with another site . If this is the case, use the "Mirror Unstick" tool to unpaste the sites. Is it done correctly on the screen? Ie I do not need to peck off the mirror?
If I did everything correctly, then why are 3 pages indexed on a non-main mirror?

Answer 1

So over time they will fly out of the index and that's it :)