Each time a website is created in Matomo, the website is completely new and has a new siteId.
The thing is, if a website gets deleted in Matomo, and then re-created, it will be a completely new website, old logs are lost and the website has a new siteId, even if the host name and site name are the same.
Is there a way restore a website so that it has the same siteId as before the deletion?
I think the data isn’t deleted by default, so you should be fine to create a new website and manually change the siteid in the database to the old one.