I understand why this importer is version 0.2 but don't understand why there isn't a more finished version of an importer for WordPress to WordPress itself. That should be the easiest migration.
I exported all blog data from 3.0.1 and imported into a mutlisite version of 3.0.1.
Errors I found so far:
- Users without posts not imported
- Users imported as display name instead of user name
- Imported users loose first/last name and email information (probably more)
- Special tags such as Youtube video tags in post are lost.