Problem: I would like to delete a WordPress Archive but I cannot find it in the list of WordPress Archives at Toolset > WordPress Archives.

Solution: The missing WP Archive is in "draft" status, not "publish". Draft archives are currently not displayed in the WP Archives list, so this one will not appear until it is published. From wp-admin > Toolset > Dashboard, click the link to edit this archive. Or if you know the draft archive ID, you can go directly to the archive editor at a URL like this:

https://yoursite.com/wp-admin/post.php?post=12345&action=edit
Replace 12345 with the archive ID.

Publish the archive temporarily, and it will appear in the main archives list at Toolset > WordPress Archives. Then you can Trash / Delete the archive from the list.