To get the GA procedure in NAV you have to sequence the FPL before intercepting inbound track/ LOC/ILS. You need the TO way point that is on final track generally FAF , either you use radial in or clear each way point. Extend centre line become so routine that it gets used even when RW centre line is different than inbound track and people start misunderstanding the purpose of doing it. What is centre line for Canarsie approach at JFK or Kai Tak HK ILS?