When migrating a custom domain from one Viewport site to another Viewport site or to a Scroll site, it’s important to consider various steps and respect the order of these steps.
If you follow the instructions on this page, you will minimize any downtime for your custom domain.
Start with the described steps only after you’re done setting up your new site (i.e. your new site is ready to receive traffic):
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In the site where the custom domain is already set up, click Site Settings → Remove custom domain
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In your DNS tool, delete the two CNAME records that you had previously set up for your subdomain
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Wait until the screen from step #1 indicates that the custom domain been completely removed from your site. Once done, your custom domain is fully offline and not available to users anymore.
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Start the setup process for your new Scroll site as instructed on Connect a Custom Domain, which involves setting up two new CNAME records. Please note, the provided values will be different than for the CNAME records you had previously set up as instructed.
Please expect some downtime for your custom domain between steps 3 and 6.
Legacy URLs in the formats /page-title.12345678.html are no longer supported in Scroll Sites. If you still actively use links in this format, you should set up redirects in Scroll Sites.