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A little back story for context:

I was brought in to help fix an issue with a WordPress Theme Update & Migration gone horribly wrong. Long story short, when the guy that did the move finished the work he somehow 'lost' all the blog posts...6 years worth of blogs posts.

Luckily I was able (from what I can tell) find a full backup of the old website before it was migrated, in addition to a copy of the MySQL DB.

However, it seems that it was a multisite configuration - and after uploading all of the web files to a sub-domain, and replicating the DB (as best I can tell) the website is still not accessible.

I've pretty much given up on the idea of fully replicating the website as it was - I feel like I've tried everything. With that being said - the only thing that's really important to the customer are the blog posts.

My question is this: If I still have the original web files, is there some way to extract the blog data and inject it into the new WordPress website? If so, how would I go about doing that?

These types of issue(s) and/or troubleshooting is not something I have a lot of experience in - as i'm really just a front-end developer.

Any/all help is greatly appreciated!

(if more information is required to help - please let me know and I'll provide it ASAP)

  • of which migration are you talking about ? from were come the website ? and the backup files ? – mmm Sep 3 '16 at 12:24
  • @mmm The pervious person who did the website migration/upgrade. There was a website that had 6+ years of blog posts, but the website itself was very dated looking. So he was brought in to create a new WordPress Theme and migrate the website to a new reliable host. During the migration of the website - somehow the developer lost the data and couldn't upload the full site. But I seem to have been able to locate the old web files. Not sure if that helps. – Michael Giesen Sep 3 '16 at 12:26
  • and on the new host, the site use the same domain as the old host ? – mmm Sep 3 '16 at 16:06
  • What exactly does backup have? If it's copy of WP database you should able to claw posts out of it fine, though importing them would be a custom effort. It's strange that you can't just get old site up from full backup, but not enough details to day about that... – Rarst Sep 3 '16 at 16:39
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Here are the steps I would take.

  1. Make a backup of the database backup and store it someplace safe
  2. Find out what version of WordPress the site was running when the backup was done like this:
    • open the sql dump file in a text editor and search for db_version.
    • Use that value to find the corresponding WordPress version, here.
  3. Install that version of WordPress locally or on a dev site (subdomain or whatever)
  4. Follow the instructions for migrating a site to a new domain (i.e. localhost or dev.example.com)
  5. Use the WordPress/tools/export tool to export the posts.
  6. Import that .xml file into the new blog

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