No worries, reformatting is a very normal thing to do. After importing a GedCom it is rather important to do, as the imports hardly ever give a nicely formatted biography.
If you have added the profiles, you should not 'start' over again, as the profiles are already there. If you compare a new Gedcom you will find matches of the existing profiles.
The way to go is to edit the profiles. If you post a link to the profile(s) (you can add one to your question) we can have a look.