You can easily restore learning paths you have archived if you need to use them again.
In the left navigation, make sure you are in the Admin Workspace.
When in the Admin Workspace, select Training Admin for all Training Administration options.
Select Manage Training and then select Learning Paths.
Filter the status by Archived.
Select the learning path from the list that appears. Then Unarchive Learning Path.
Please note that if you have not unassigned the users from the learning path's courses upon the archival, then the progress of the users that were enrolled in this learning path before archiving it will appear as it was before the archival.
Please note that this button may remain disabled for some time until the archival process is finished. If you see the button disabled, just wait some time and visit the page again.