TrueCopy for Umbraco
Copy a section of your site and have the links come with it.
Umbraco’s built-in Copy leaves every internal link in the copies pointing at the originals. TrueCopy performs the same copy, then repoints every link whose target was part of the copy — and lists the ones that still point outside it, which is the thing an editor cannot see for themselves. Custom property editors are supported by implementing one interface.
dotnet add package Our.Umbraco.TrueCopy
Requires Umbraco 18 and .NET 10. On the Umbraco 17 LTS, install the 17.x line instead - the package major follows the Umbraco major:
dotnet add package Our.Umbraco.TrueCopy --version "17.*"

Documentation
MIT licensed. Part of a set of three Umbraco 18 packages: Content Dashboard for Umbraco · Error Dashboard for Umbraco · TrueCopy for Umbraco (this one)