I imported a list of 10,000+ emails that added about 100 emails and updated another 100. I put these all into the new group I need to send to today. I realized I wanted to add two additional segments of information to all these members. So I went to re-import the list with these added fields. The import won't work saying there's no information to update. So I went in and deleted a couple people from our audience, deleted the group, and tried again. It still says there's no one to update or add, despite the new fields of information I want to add and the deleted audience members, and it won't place the 10,000+ members in the new group. Please help!