Email extra fields

Hi, There are some extra fields that are being sent with the emails that are duplicate.

I have added via a checkout field editor extension extra fields to the shipping and additional details forms, and when I or the customer receives an email those two extra fields are added both under the billing and shipping address section and over the customer information.

I cannot figure out where is the code to change that, i cannot seem to find the WC hook on those pages,. Can you please help?

Thank you