Hi @Glenn Maxwell .
As part of changing a SharePoint site address, moving a site to a different geo location, or swapping a site, we automatically create redirects to ensure that links pointing to the prior URL continue to work. These redirects are sites that use a special site template at the prior site URL.
In some cases, you might want to free up the old URL to use it for a new site. To do this, you need to delete the redirect.
Here are steps:
- Download the latest SharePoint Online Management Shell.
- Connect to SharePoint as a Global Administrator or SharePoint Administrator in Microsoft 365. To learn how, see Getting started with SharePoint Online Management Shell.
- Run the following command:
Remove-SPOSite -Identity https://contoso.sharepoint.com/sites/OldSiteName
- When prompted, confirm that you want to delete the redirect.
Reference: https://learn.microsoft.com/en-us/sharepoint/manage-site-redirects
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