If you have server and domain on One.com like Skrivekollektivet, it is important to notice the following:
When changing to a WordPress platform you might like to export earlier blogposts to your new platform.
Some might have used One.com’s iloblog-platform for bloging. Then you might experiende the same problem as Skrivekollektivet. Cause, it is not possible to import from the iloblog-platform to WordPress. (The host One.com confirmed this!)
What we did on Skrivekollektivet, was to do this manually. Each blogpost from our iloblog was posted in the new WordPress-platform. Before each article was publised, we changed the date for publish.
Yes, it takes some time to do this, but its the only way to take care of your blog-archive and import it to your WordPress-platform.