Insufficient storage error when restoring a Netlify backup and transferring custom domains

Goal

Determine whether restoring a Netlify site backup to a newly created site automatically preserves the original site's custom domain associations and DNS configuration.

Constraints/uncertainty: Netlify documents that backup restores can fail with an insufficient storage error when the target site exceeds its quota, but the platform does not explicitly state how custom domains and DNS settings are handled during a restore to a new site, and observed behavior differs between Free, Pro, and Team plans.

• Does a backup restore to a new Netlify site copy over the original site's custom domains and DNS records?
• Is this behavior consistent across all account types (Free, Pro, Team) or does it depend on the plan?
• What manual verification steps are required to confirm domain association after a restore?