I see a lot of this problem on the Forum.
My graphics/logo/buttons/whatever change after I publish a different page!!!
Old hands here know that it is a problem of copying and pasting from one page to another and then editing that element.
There's an easy fix:
While using BV go to:
Check the box that says "Use page name for prefix"
So easy, but difficult to find for beginning users.
Why not have that as default?