Way to refresh the core pages?

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While dragging and drop migration files the single page account ended up in the home/account folder. I was unable to change the URL to the file. So I thought if I delete it I could add it back through the single pages page. Is there a way in 8.5.2 to refresh the core in the database? or through the site?

 
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
Replace the concrete folder from a fresh download?