Creo Reverse Engineering (Restyle) > Managing Domains in Restyle > To Remove a Loop from a Domain
  
To Remove a Loop from a Domain
1. Click Restyle > Remove Loop.
2. Click anywhere inside the highlighted domain to select it.
3. Select the area inside the closed loop curves that does not have any faceted points highlighted. The loop is no longer considered for limiting the domain. Restyle highlights the entire domain.