Okay, I take your point, and it is a good one.
Again, I am a single-engine pilot. I am 76 years old, started flying when I was 26. I know how to do flight plans, but not for heavy aircraft. Saying that I have to learn how flight plans differ for heavy aircraft.
Most of my flying is with VFR, when I started to fly the 172, now the 182, I use the Garmin which is ezpz.
It would be nice if there were a way to know why the disco was there, so you would have some idea how to fix it.