"Main" link on menu point to template blog site


I have a blog template where in the menu there is:
1. Main Page Link
2. Page
3 . cpt-archive
4. page

When creating a new blog I get menu:

1. Main Page Link --> Points to the template blog
2. Page -- OK
3 . cpt-archive --> Points to the template cpt-archive link
4. page -- OK

What to do?