John Collins wrote:


When an approach is loaded, it is appended to the flight plan after the
destination airport. As stated earlier, the waypoints in the original flight
plan will sequence normally until the destination airport is reached, at
which time the 430 will navigate direct to the IAF waypoint and
automatically "activate" the approach sequence.

To cut to the chase, those of us familiar with using FMSes know to clear
the destination airport from the flight plan once the approach is
loaded. In a full-press FMS, this is known as a route-discontinuity.
And, clearing that discontinuity in a full-press FMS or a Garmin panel
mount will get it all to work as a flight plan with continuity.