Replacing media items
If you have a media item that is uploaded in multiple places around the site and you need to replace it, Umbraco 10 has a new replace functionality that actually works!
1) Open up your media item in the media files
2) Click on the "X" to remove the current media
3) Upload your new media file
This works for ALL media (Images, PDFs etc). BUT note, if you want to replace a PDF/Excel doc, you should upload the file with exactly the same name. This means you won't have to worry about dead links in your website - the old URL will go to your new document.