Hi there! We’re migrating a number of standalone sites into a multisite installation, all using your amazing BB Theme & BB Page Builder Plugin. The first export of a site and import into the multisite went great. However, we then upgraded to agency version (no issues that we saw), but now we can’t get the next site to import. We even updated that other standalone site with the Agency version and tried again (no luck). We’re wondering if you might be able to take a look for us? We can submit a ticket with credentials, etc. Many thanks!
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Hey Brian,
Can you try using the patched importer below, re-import the pages, and see if it works? The native WP importer has issues handling serialized data, and that may have caused the issues.
http://forum.wpbeaverbuilder.com/downloads/wordpress-importer-patched.zip
Let us know how it goes! 
Ben