How to change the slug of the page name for a collection item

I created a sample collection of items for a blog collection.

I then edited each one so they would become new blogs. Unfortunately, I can’t figure out how to change the pagename slug for them. For instance:

should be:

It took me hours to construct these posts. What’s the best way to fix this without having to recreate every blog post?

public share link:

Found it. HTH others find it :slight_smile: