I did this recently (well not all my data, but one bank account). I had to go through customer support, and they had some trouble with it but eventually figured

I did this recently (well not all my data, but one bank account). I had to go through customer support, and they had some trouble with it but eventually figured it out. I'm not a fan of Plaid. The core concept is great, but training users to enter credentials (much less banking credentials) into third-party sites is nuts. Nowadays, it would be easy for someone to pivot from a compromise of a random company's web server to impersonating Plaid and pwning most of their customers' bank accounts. This would be trivial to fix by deprecating their current UI and switching to a small popup or redirecting to a different URL.