Got a screenshot relating to this problem. Can be a bit confusing at some times!Hi Chuck,
I agree entirely with Mark. Without a data feed close to the ground, this is what may happen together with 'move planes' setting in the settings box. It can be a bit confusing sometimes! Just wondering if a similar problem might occur if your network connection temporarily crashes?
I have been experiencing a similar problem with the planes at Adelaide International Airport. A plane without data can fly as far as Kangaroo Island before finally disappearing of the map. It had been good a few days ago when the ground coverage at the airport was functioning well. Then it just stopped... I do now understand a bit from the discussion "Ground Coverage" discussion I posted on Pinkfroot (http://my.pinkfroot.com/forum/topics/ground-coverage) that obstacles can restrict the coverage an ADS-B reciever can pick up. Hope the coverage at Adelaide Airport comes back soon! Good luck also with the coverage at FCO!
Hope this can help!