can the system automatically fill in the addtional fields when registering for a new event if the user has logged into the site, they have already registerd information for one event, socan the the persons old addtional information be loaded into the fields?
Auto-population for form fields is only applied to the default fields like name, address, city, email, etc. The additional info is custom fields... which currently have no way of mapping to user profile fields. This should be included in 2.7... coming in the fall.