Moving two LARGE individual WP sites into Multisite installation

  • I have two rather large standalone WP sites that I need to migrate to a new Multisite installation, as subdirectories of a new domain. Any googling I’ve done has shown results that would work for small sites or blogs, but not necessarily for websites that have thousands of pages/posts and several gigabytes of media files (mostly images). And the Duplicator plugin which I also stumbled onto is not recommended for moving to a multisite environment. Are there any tried and true methods or plugins available to help me? Thanks in advance.

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  • have you tried WP All Import? it should be able to import pages and posts to multi site, and update contents in the future by running the import again. it divides big files into small manageable chunks before import so a few thousand records are not an issue.

    Importing huge media files can be tricky. you may use FTP to upload the images to the site specific upload folder which may take hours depending on your internet connection. if you need to manage these media files using WordPress media library in the future, you will need to create records in the sub site posts table (images are stored there as custom post type called attachment).

    good luck with the migration.

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