When sending to a DE, do All Subs attributes get pulled in by default?
For example, DE and All Subs both have a record with the same Subscriber Key but DE has First Name 'Mike' whereas All Subs has First Name 'Joe'. I want the First Name to = 'Mike' but I'm getting First Name = 'Joe.'
How can I fix?
If I'm not using the All Subs list for anything but status verification at send time, can I just delete that All Subs attribute?