Wiki - Converting existing regular WP pages to Wiki pages

We're migrating a large MediaWiki installation to WordPress. Our intention is to migrate all MW content into new WP wiki pages using the WPMU Dev wiki plugin.

At this point, we're considering using the "cms2cms" migration service to migrate content from MediaWiki to WordPress.

However, we believe that will convert the MediaWiki content to regular "pages" in WordPress.

We then would like to convert those WP "pages" to Wiki pages which will be managed by the WPMU Dev Wiki plugin.

I'm sure you must have had customers in the past who were migrating content from MediaWiki to WP + Wiki. Do you have any suggestions or documentation for the best approaches for migrating MediaWiki pages into WordPress in such a way that they can be managed by the WPMU Dev Wiki plugin?

Many thanks.