I am trying to delete the attribute records of certain subscribers, to make these records blank.
I can delete these subscribers, and import them again, but then I lose all their history.
I cannot import them with those attribute fields empty because empty fields are not overwritten.
The subscribers are too many to do it manually.
I need these fields blank to be more flexible when using placeholders like [Country] for example.
Help will really be appreciated. Thank you in advance.