Before launch: list the pages worth keeping
Export the current service and location URLs, then note which pages bring search visits or useful enquiries. Include important pages even if they receive little traffic. For a business serving Ümraniye, record how each page describes the services and areas actually covered. Put the old URL, the intended destination, its language and the reason for the change in the same spreadsheet.
On launch day: test addresses and enquiries
An unchanged URL should still open with a 200 response. If a page moved, check that its old address leads in one step to an equivalent page in the same language. For a retired service with no equivalent, use a clear not-found response. Check the canonical address, sitemap and indexing settings. Then send a test enquiry from a phone and confirm that the person who handles enquiries actually receives it.
After launch: compare results by page
Keep a copy of search impressions, clicks and valid enquiries before the change. Compare the same pages over comparable periods after launch. A drop in clicks may call for a redirect or indexing check; a drop in enquiries while clicks hold steady may point to the form or its confirmation step. Record the issue, its owner and the date to check again.