Mxsmanic wrote:
..

Approaches are different, though, since changing them seems to mutate
them into regular routes. I don't use approaches and the like too
much on the GPS, since it's harder to get it working than to fly it by
hand (or by autopilot).


You can do changes to the IAP flight plan sequence prior to the FAF and
the approach mode will still activate as well as the missed approach.

The limiting factor is an unacceptably large angle of intercept to the
FAF as established by Garmin.