Hi!
Go to Profiles -> Manage Seller Details
When you click on "Manage Seller Details", it with then show you a list of "Seller Details" profiles that you have saved. Just click on "Edit" and then your details should come up.
If you go to Profiles and just click on Seller Details, then yes, it will be blank because this is where you create a new profile.
Hope that helps, if not, give a holler!
Marcia