On a recent flight I made several attempts to land at my destination airport but weather was not cooperating, so I diverted to a nearby airport. However both FlightAware and another ASDI vendor showed my flight as terminating at the original airport. Only one landing attempt was displayed. I can imagine that the FAA’s Host computers generated an AZ (arrival message) for the first landing attempt. But I find it hard to believe that there were no subsequent TZs (position reports) while I flew around and diverted.
I wish I could see all ASDI messages, not just TZs, for a given tail number for some time period (say a whole day).