Hi, is there a best practice for moving to the latest style guide?

at: Updating existing projects | Relume ResourcesUpdating existing projects | Relume Resources

Under Update your existing style guide to the latest Client-First version

it says: Occasionally there are new versions of Client-First. Relume works closely with Finsweet on changes made to Client-First because these changes can have sweeping effects on the component library.

That doesn't seem very helpful in describing the steps.

For example, can I create a page that is "style guide new" while leaving the old one in place? Should I delete the current one before creating the new one?

What is most likely to work and to create the fewest issues?

Thanks

Also, does the most recent style guide use variables?