I spent some time the other day helping our ITRTs figure out how to install WPMU and then get their single user WordPress blogs imported into WPMU. I’ll probably make a video sooner or later as this is probably murder without images.
1. Go to your WPMU install and make a new blog. Make the url the same thing as your WP blog but add a 1 and the end (so if it the blog url is http://ego.com/loveme name this one loveme1). We’re doing this so you can import it in while leaving the original blog up until you’ve made sure everything worked the way you wanted. We’ll go over how to drop the 1 from the WPMU url later. The admin here will be whoever is the main user of the blog. You’ll have access no matter what as WPMU admin.
2. Got to your WP blog (the original one) and log in to the admin panel then choose tools>export. This will get all your content out1. Save it on your desktop or wherever in a folder with the same name as the blog. While you’re here check which theme is being used and note any plugins you’ll need to grab.
4. Upload your plugins and theme to the WPMU site.
5. Got to the admin portion of the WPMU site. Make extra sure you’re in the right blog. Look at the URL to double check. Then go to Tools>Import>WordPress and select the file you exported earlier. Make sure you check the import attachments and uploads option.
6. Now that it has run, check and make sure the content is there. If it is, proceed. If it isn’t, I’m not sure what’s up. Talk to me. Maybe we can figure it out.
7. Turn on the old theme (remember in WPMU you have to activate it as an admin before it’s available) and activate the required plugins.
8. Delete the old blog. Chances are, if you’re reading this, you installed it using Fantastico. If so, go to cPanel>Fantastico>WordPress and delete the blog.
9. Now return to WPMU and go the Site Admin>Blogs and click Edit on the blog you’re working on. Now under Path you can delete the 1 and click Update Options. You’re blog should now seamlessly replace the old blog.
2 With some clients you can just open two windows and drag between them to save time but if things fail mid-transfer you’ll likely have some problems.
3 I’m assuming you’ll know the difference between the theme and plugins. If not, make two folders to help you keep that straight.