I have a list we had initially imported and since then we want to update the list with further custom fields. When I do a re-import on that list with the new custom fields added will it add those custom fields to the existing subscribers if they do not already have a value for that field or if the field does not already exist?
Hi Tony, first up, you need to create the new custom fields first within Campaign Monitor. If you import say, a spreadsheet with custom fields for existing subscribers, you can map the fields in the spreadsheet to the new custom fields you've created in the app. Any existing data in the custom fields within Campaign Monitor will get overwritten when you import the spreadsheet with new custom field values. Hope that helps!
That does help. To recap, I need to first add the new additional fields and then import the updated list and for the existing subscribers the new fields will be populated with the new file import as everything is overwritten. Is that correct?
Yes, that is correct. Good luck! :)