Do you already have a wiki, or do you want to import some pages from a previous wiki? If so, we can import your content from a XML dump. Please open a support ticket and attach the XML content dump file.
For customers with existing LocalSettings.php files and databases, we can import those directly instead, forgoing the XML dump. Rename your LocalSettings.php file into LocalSettings.txt and upload a zipped version of your SQL database.
If you need further assistance with migrating from another wiki host, we'd be more than happy to answer your questions. Please open a support ticket and we'll be happy to help you.