Adding Subscribers to Lists: manual chapter feedback and discussion

Feedback on the following chapter: https://www.phplist.org/manual/ch013_adding-subscribers-to-lists.xhtml

“List Membership” field was exported from my existing phpList database. But it won’t import it from the exported csv file into a new installation of phpList. I don’t want to go to every subscriber and assign which lists they belong to. How can I force phpList to include this field?