There are a few mistakes that have been published to Production in Designer. If I restore a backup from around a month ago, will I lose the new content that I’ve published in Editor, such as news stories, new products etc.?
Just tested it, and yes, you’ll lose all the created CMS items.
Depending on how big the changes that you want to be reverted are, I’d recommend previewing the backup and then copy-pasting what you need in designer.
