5Z wrote:
wrote:
QUESTION: Could I have used SeeYou for this?

Yes. SeeYou allows you to import several files and join them. It wil
ask if you want to include ot ignore new waypoints that are near
existing ones. Down side is that if the contest provided airports
don't have useful comment info (CFAF, AWOS, etc) then you will lose
that as you want to keep the contest TPs untouched (at least the
coordinates).

Yes, this is why you want to load the new aifield data first, then
overlay your old waypoint database and reject nearby matches. This way
the new airfield data will be retained. The only thing you need to be
careful about for contests is if the airfield is also a turnpoint. In
this case you may have to manually edit the coordinates to match the
contest official version if they are different. In this case, be sure
to set your degree display format to match the format used for the
official turnpoint list to avoid round-off errors.