Redesigning without losing the search visibility you already have

A redesign changes the design. A careless redesign also changes every URL, and that is where the traffic goes.

The sequence that protects it

• Export the existing URL list before anything changes.
• Map every old URL to its new destination — one to one where possible.
• Use 301s, not 302s, and never chain them more than once.
• Keep the heading hierarchy and metadata intentional on the new templates.
• Re-submit the sitemap and watch Search Console for four to six weeks.

None of this guarantees rankings hold — nothing does. It removes the self-inflicted reasons they would not.