There are two parts. I moved my blog from wordpress in 2018 to a custom CMS. During that transition, the articles were messed up (embeds/pics/formating was gone).
I am now transitioning back to Wordpress. I have the original JSON file from before we transitioned. And an XML file of the articles published after that date. I need both imported back to Wordpress and to look good.
Part 1) Migrate posts from JSON file into wordpress while keeping everything intact (titles, featured image, embeds, uploads, categories, authors, tags, etc).
Part 2) Fix social media embeds of all the articles imported via an XML file (script may be needed as there are many articles and embeds).