
For the last few days, I have been following the instructions in this post by Dennis Howlett: How to migrate a monster WordPress blog.
This method is only needed if you don’t have full server access to take a MySQL dump and a wp-content dump in order to migrate a blog using PHPMyAdmin or equivalent.
Dennis’ post shows how you can still migrate a very large blog using the native WordPress export feature, splitting the export .xml file into smaller components using a WXR splitter, then using the native WordPress import feature to upload the archives.
It’s tedious as hell, but it does work.