Why it happened
On the import page, Add to lists starts with your company’s default lists. Unless you changed that setting, the default is All lists, so the file went into every list you have.Keep the contacts, fix their lists
Option 1: import the same file again. On the import page, select only the lists you want under Add to lists, and set Duplicate handling to Overwrite. With specific lists selected, Overwrite also removes existing contacts from the lists you did not select. Option 2: remove them from one list. On the Contacts page, choose the wrong list as the view, select the contacts, and click Remove from this list. To take everyone, use Select all contacts. They stay in your company and on their other lists.Remove the contacts completely
Filter the Contacts page to the people you imported, select them, choose Select all contacts, then More → Delete. This deletes every contact that matches the current search and filters, not only the rows on screen, so check the count in the confirmation first. If the contacts are mixed in with ones you want to keep and nothing tells them apart, message support with the CSV file and we will remove exactly those rows.Tags from an import
To remove a tag from everyone, delete the tag in Settings → Tags & labels. It is removed from every contact. A tag that a sequence uses cannot be deleted until you remove it from that sequence.Stop it happening again
- Set which lists new contacts join in Contacts → Lists → Default lists. Choose Specific lists or No lists instead of All lists.
- Check Add to lists on every import. One file goes into one set of lists, so use a separate file for each list.
- Deleting a list does not delete the contacts in it.