This is my situation.

On 1 Jan 2023 I took a backup on my entire WordPress database. Let’s say that backup contains 100 posts.

Fast forward to today, 14 Feb, and I now have say 125 posts in my WordPress installation.

If I want to restore/over-write the contents of those original 100 posts as at 1 Jan, how do I do that while keeping the 25 “new” posts untouched?

Obviously all the images I uploaded in the interim will still be on the server too.

It’s literally just replacing the post body (i.e. no other meta data, not even the titles) of those 100 original posts using the 1 Jan backup.