If these paths were saved in clear text dans le Registry or elsewhere, that may be possible, but they are not.
Reference: TenForums: How to Backup and Restore Quick Access Pinned Folders in Windows 10
Note: The above link is specifically regarding Windows 10, but I tested and confirmed the same behavior in Windows 11.
Pinned items are saved in %AppData%\Microsoft\Windows\Recent\AutomaticDestinations as .automaticdestinations-ms fichiers. These fichiers ne sont pas intended to be utilisateur-editable. J'étais able to "read" portions dum using a hex editor, but the information was encore unclear. I'm guessing it may be possible to write a utility to modify these, but I n'a pas find one in searching.
Actuellement, Je crois that unpinning the old links and pinning nouveau is the quickest way to add nouveau paths vers le Quick Access links.