Imported 6300 from CSV -- some to the wrong list

Yesterday I exported all subscribers’ Zip and State info, to correct an issue we had with the State field (many of them were blank). Once I corrected all of the State info I imported all of the emails – back to a single list. Unfortunately, approximately 1500 of them don’t belong on that list. I have seen topics discussing all emails going to the wrong list, but not just a portion.
Any ideas on the best way to move some of those imported emails.
All of the imported emails that went to the wrong list, are subscribed to other lists. Is there a way to edit all subscribers on a list at once?